_Habitat ad_ Juan Fernandez. _Mus. Brit., nost., Brod._

25. HELICINA SORDIDA.

_H. testa globoso-conoidea; anfractibus rotundatis longitudinaliter striatis; operculo castaneo; long. 2/8 paulo plus; lat 5/16 paulo plus; poll._

_Habitat ad_ Rio de Janeiro. _Mus. Brit., nost._

The colour of this sh.e.l.l is of a dirty yellowish white, with a slight tinge of diaphanous violet within the margin of the lip.

26. PUPA SUBDIAPHANA.--No. 194. MSS.

_P. testa cylindracea, alba, subdiaphana, transversim creberrime substriata; long. 4/8 paulo minus; lat. 3/16 paulo minus; poll._

{552}

_Habitat ad Portum_ Praya. (Cape Verd Islands.) _Mus. Brit., nost._

27. BULINUS GRAVESII.

_B. testa subventricosa, longitudinaliter subrugosa, sub-albida, fusco-maculata, spira longitudinaliter striata; long. 1-4/8; lat. 13/16 paulo minus; poll._

_Habitat ad_ Valparaiso. _Mus. nost._

I have named the sh.e.l.l after my shipmate and friend, Lieutenant Thomas Graves, whose zeal and a.s.siduity in a.s.sisting and increasing my collections of Natural History was as unwearied as the alacrity and ability which he displayed in the primary and more important objects of the voyage, of which, in his Majesty's ship Adventure, he filled the appointment of a.s.sistant surveyor. To Lieutenant Graves I am princ.i.p.ally indebted for my land-sh.e.l.ls, and I therefore take the opportunity of recording the valuable a.s.sistance he rendered me during the whole period of his serving under my command.

28. BULINUS GRAVESII, var.

_B. testa subpyramidali, scabra, albida, aliquando lineolis raris; epidermide lutescente; long. 1-9/16; lat. 11/16 paulo plus. poll._

_Habitat ad_ Valparaiso. _Mus. Brit., nost., Brod._

This is certainly a variety of No. 27, Bulinus Gravesii.

29. BULINUS DENTATUS.

_B. testa cylindracea, punctata, sub-diaphana, fusco maculata; apertura dentata, clausiliam mentiente; long. 15/16; lat. 5/16; poll._

_Habitat ad oras Brasiliae_ (St. Catherine). _Mus. Brit., nost._

30. BULINUS LUTESCENS.--No. 140. MSS.

_B. testa obovata, ventricosa, subscabra, lutescente; long. 1-1/8; lat.

11/16; poll._

_Habitat ad Maldonado_ (Gorriti). _Mus. Brit., nost., Brod._

31. BULINUS CORRUGATUS.--No. 941 MSS.

_B. testa subalbida, transversim et longitudinaliter rugoso-striata, maculis fuscis, obsoletis; apertura purpurascente; columella nigricante purpurea; long. 1-6/8 paulo plus; lat. 13/16; poll._

_Habitat ad_ Concepcion. _Mus. Brit., nost., Brod._

The body-whorl of the older specimens of this sh.e.l.l is rather roughly striated or wrinkled, the last but one slightly so, and the remaining whorls are quite smooth. The colour is whitish, with {553} purple spots more or less obsolete: the old specimens are sometimes of a dull yellowish white. A specimen is deposited in the British Museum.

The young sh.e.l.ls of this species are of a whitish brown, with darker coloured striae. They are very fragile and semi-transparent.

32. BULINUS SORDIDUS.--No. 803 MSS.

_B. testa pyramidali, transversim striata, fusca; anfractu basali ad suturam subalbido, linea subcentrica pallida; labii vix reflexi margine albo; long. 1-15/16; lat. 7/8 poll._

_Habitat ad Brasiliam_ (Rio de Janeiro). _Mus. nost._

33. BULINUS MULTICOLOR.[214]--No. 791 MSS.

_B. testa ovato-pyramidali, longitudinaliter et transversim creberrime substriata, luteo-fusca maculis albis et purpureo-atris fucata; labio roseo subreflexo; columella subalbida, apertura intus subatropurpurea; long. 1-5/16; lat. 9/16; poll._

_Habitat ad Brasiliam. Mus. nost., Geo. Sowerby._

33.* BULINUS ROSACEUS.

_B. testa ovato-oblonga, scabriuscula; apice et anfractibus primis, rosaceis, caeteris viridi-fuscis; labro albo; suturis crenulatis seu plicatis; long. 2-1/8; lat. 1; poll._

_Habitat ad oras Americae meridionalis_ (Chile). _Mus. Brit., nost., Brod., Geo. Sowerby, &c._

Soon after the return of the expedition, my friend Mr. Broderip, to whose inspection Lieutenant Graves had submitted his collection, observing symptoms of life in some of the sh.e.l.ls of this species, took means for reviving the inhabitants from their dormant state, and succeeded. After they had protruded their bodies, they were placed upon some green leaves, which they fastened upon and ate greedily. These animals had been in this state for seventeen or eighteen months, and five months subsequently another was found alive in my collection, so that this last had been nearly two years {554} dormant. The sh.e.l.ls were all sent to Mr. Loddige's nursery, where they lived for eight months, when they unfortunately all died within a few days of each other. Soon after the sh.e.l.ls were first deposited at Mr.

Loddige's, one got away, and escaped detection for several months, until it was at last discovered in a state of hybernation; it was removed to the place where the others were kept, when it died also. The upper surface of the animal when in health is variegated with ruddy spots and streaks on an ash-coloured ground.

34. PARTULA FLAVESCENS.

_P. testa subfusiformi, pallide flava, interdum castanea vel flavo et castaneo varia; long. 11/16; lat. 5/16 paulo plus; poll._

_Habitat ad oras Americae meridionalis_ (Valparaiso). _Mus. Brit., nost., Brod._

This sh.e.l.l varies in its colour almost as much as _Bulinus citrinus_.

35. ACHATINA DONELLII.--No. 413 MSS.

_A. testa subalbida, transversim substriata, anfractu basali ventricosa; long. 7/16 paulo plus; lat. 2/8; poll._

_Habitat ad Lima._ _Mus. nost._

36. ACHATINA DIAPHANA.

_A. testa subcylindracea, diaphana, transversim striata; long. 5/16; lat. 5/32; poll._

_Habitat ad insulam_ Juan Fernandez, _in montibus._ _Mus. Brit., nost., Brod._

37. ACHATINA STRIGATA.--No. 462 MSS.