Testa orbiculata subtrochiformis profunde umbilicata albida fasciis binis fuscis cincta, spira brevi acuta, anfractibus 5 convexis concentrice sulcatis.

Icon. --

Sh.e.l.l orbicular, nearly trochi-form, white with two pale-brown bands on each whorl; the one near the suture narrow, and the other, placed on the middle of the whorl, broad; whorls five; convex rounded, with numerous close concentric furrows; axis umbilicated; umbilicus rather narrow, deep; aperture rather more than one half the length of the sh.e.l.l; peristome (not formed ?) simple.

99. Chiton rugosus (n.s.)

Testa octovalvis glabra, valvis tuberculatis, ligamento glabro laevi.

Icon. --

Sh.e.l.l with eight valves, bald; valves covered with numerous small tubercles both on the central and lateral area; marginal ligament smooth, bald.

100. Patella tramoserica, Chemn. 11 179.

Icon. Chemn. 11 t. 197. f. 1912, 1913.

101. Patella radiata, Chemn. 11 100.

Icon. Chemn. 11 t. 197. f. 1916, 1917.

When young, the form of this sh.e.l.l is more conical than in the figure above quoted, and the outer surface is finely radiately striated.

102. Patella neglecta (n.) Patella melanogramma, Sowerby, not Gmel.

Icon. Sow. Gen. f.

When this sh.e.l.l is young, or when the older specimens have lived in deep water, where their surface has not been broken by the shingle, or corroded, or covered with coralloid incrustations, they are regularly radiately ribbed; the ribs are covered with narrow intermediate grooves, marked with a black spot on the internal edge of the sh.e.l.l, which is permanent through all the variations of the outer surface. The inside is pale purplish-brown, with a yellowish-white muscular impression. In the older specimens the central disk is often of a pure opaque-white, and the muscular impressions round the inner edge of the sh.e.l.l are both pellucid brownish-white; length four inches, breadth three, height two inches.

This sh.e.l.l is abundant on the rocky sh.o.r.es of King George the Third's Sound.

In the collection there is a worn specimen of another species of this genus; but from its bad state, and from the very great confusion in which the various species of Patella are involved, I do not venture to describe it as a new sh.e.l.l, although there has not been any hitherto described to which, in its present state, it can with any certainty be referred. It is conical, convex, with twenty-four or twenty-five distinct convex ribs alternately increasing in size; the grooves between the ribs are broad, with irregular, concentric, black-brown, raised lines, which appear to be caused by the wearing away of the other part of the dark outer coat; the inside is white with a brown disk, and the edge sinuated and furnished with grooves under the larger ribs.

103. Haliotis roei (n.s.)

Testa subrotunda convexiuscula rugosa et plicata spiraliter sulcata intus argenteo et rubro margaritacea, spira prominula.

Icon. --

Sh.e.l.l roundish, rather convex; the outside reddish or brownish, regular; closely but unequally spiral, ribbed, and irregularly and roughly concentrically striated and plaited; the row of perforations is rather prominent, and pierced with six or seven moderate-sized, slightly tubular, holes; the inside is iridescent, pearly, rather wavy, and exhibits two distinct whorls; the columella lip is short and flattened, outer lip rounded; the spire is convex, rather prominent, placed about one-third of the breadth of the sh.e.l.l from the outer lip, and consists of three whorls, which very rapidly enlarge.

This distinct sh.e.l.l, at the desire of Captain King, has been named after Lieutenant J.S. Roe, the a.s.sistant-surveyor of the expedition.

It is most nearly allied to H. australis, Chemn. 10 t. 166. f. 1604, but differs from it in being rounder and more distinctly ribbed.

104. Haliotis cunninghamii (n.s.)

Testa ovato-rotundata tenuis depressa rugoso-subplicata spiraliter striata intus argenteo et rubro margaritacea, spira prominula, foraminibus parvis.

Icon. --

Sh.e.l.l roundish-ovate, thin, depressed; the outer surface very slightly concentrically plaited and rough, and finely, regularly, spirally, striated; the row of perforations slightly elevated, pierced with eight or nine small slightly-tubular holes; the spire rather prominent, apex placed about one-fourth of the breadth of the sh.e.l.l from the sutural angle on the outer lip, consisting of four whorls which rapidly enlarge; the inside expanded out, disk nearly flat exhibiting one distinct whorl; the columella lip narrow, rather long, flattened; the outer lip thin, truncated; the nick of the imperfect perforation placed about one-third the length of the outer lip from the end of the columella lip: length six inches, breadth five.

This sh.e.l.l, at the wish of Captain King, has been named after Mr. Allan Cunningham, the botanical collector of the voyage.

This species, although nearly allied to Haliotis midae, is quite distinct from it.

105. Haliotis squamosa (n.s.)

Testa ovato-oblonga convexa rugoso-plicata aurantio-rubens spiraliter costata, costis tuberculato-muncatis, fauce margaritacea, spira retusa.

Icon.

Sh.e.l.l ovate-oblong, convex, externally transversely rugose, plaited and spirally ribbed; the ribs concentrically striated and furnished with numerous raised scale-like tubercles; the row of perforations scarcely round contains ten or twelve rather large holes; the spire slightly raised, very near the edge, consisting of two or three very rapidly-enlarging whorls; the inside concave, showing the external ribs, reddish pearly; the columella lip narrow, depressed, bent; the outer lip thin, strait, or cut out; the imperfect perforation about one-fifth the length of the outer lip from the end of the columella lip; length two, breadth one inch and a quarter.

This species is very distinct on account of its long form, and curved lower face, as well as its outer surface.

106. Haliotis marmorata, Lin. Sys. Nat. 1256.

Icon. Martini. 1 t. 14. f. 139.

107. Padollus rubicundus, De Montfort, Syst. 2 115.

Padollus scalaris, Leach, Zool. Misc. 1 66.

Haliotis tricostalis, Lam. Hist. 6 2. 218.

Icon. De Montf. 2 t. 114. Leach, l.c.

This specimen, which is the largest I ever saw, measures three inches and a half by two and a half. It was found upon Rottnest Island, on the West Coast.

PTEROPODA.

108. Janthina fragilis, Lam. Syst. Anim.

Janthina communis, Lam. Hist. 6 2. 206.

Helix janthina, Lin. Sys. Nat. 1 1246.

Icon. Lister. t. 572. f. 24. Chemn, 5 t. 166. f. 1577, 1578.

Several specimens of this sh.e.l.l were taken by the towing-net in the Indian Ocean, on the pa.s.sage from the Coast of New Holland to Mauritius.

109. Janthina exigua, Lam. Hist. 6 2. 206.

Two or three species of this sh.e.l.l were presented to the Museum by Mr.

Hunter, the surgeon to the expedition; it is proved to be very distinct from J. fragilis, from the description of its float by Dr. Coates in the transactions of the Society of Natural Science of Philadelphia. See Annals of Philosophy for 1825, page 385.

110. Hyalaea tridentata, Lam. Hist. 6 1. 286.

Monooulus telemus ? Lin. Syst. Nat. 1 1059.

Anomia tridentata, Forsk. Faun. Arab. 124.

Icon. Forsk. Faun. t. 40. f. b. Chemn. 8 Vign. 13. Cuv. Ann. Mus. 4 t.

59. Anatomy.

CEPHALOPODA.

111. Spirula fragilis, Lam. Syst. Anim. 102.

Spirula australis, Lam. Ency. Method. 465. f. 5. a. b.

Spirula peronii, Lam. Hist. 7 601.

Nautilus spirula, Lin. Syst. Nat. 1163.

Nautilus spicula, Gmel. 3371.

Icon. Lister Conch. t. 550. f.2. Martini. 1 Veg. 254. t. 20. f. 184, 185.

Ency. Method. ut supra Animal.