71. DIOMEDEA EXULANS.

72. CYGNUS ANATODES.

_Cygn. albus, remigibus primariis ad apicem nigris; rostro pedibusque rubris, illo lato, subdepresso, tuberculo nullo._

{542}

Interior Sounds on the west coast of Patagonia.

Molina describes a Chilian duck, _anas coscoroba_, thus: _A. rostro extremo dilatato rotundato_; _corpore albo_; but I do not think it can be the same as mine, or he would have noticed its red feet and bill. It certainly is not _A. candidus_, of Viellot; the _ganso blanco_ of D'Azara, which the author of the article in the Dict. d'Hist. Nat. xxiii. supposes to be the one and the same with _A. coscoroba_. Molina gives but a short description of that bird.

73. ANSER INORNATUS.--n.o.b. in Proceedings of Zool. Society.

_Mas. Ans. albus: dorso inferiori, cauda, fasciis nuchae dorsique superioris femorumque tectric.u.m, pteromatibus, remigibusque atris: rostro nigro, pedibus flavescentibus._ Foem. _Capite colloque canis; dorso superiori corporeque inferiori albis, nigro confertim fasciatis; dorso imo remigibus, rectricibusque nigris; ptilis speculoque albis; tarsis subelongatis._

Strait of Magalhaens.

74. MICROPTERUS BRACHYPTERUS.--Quoy and Gaimard. Zool. de l'Uranie, pl. 39.

_Oidemia patachonica._--n.o.b. Zool. Journal, iv. 100.

_Anas brachyptera._--Latham.

Racehorse.--Cook.--Byron.

_Micropt. supra plumbeo-grisescens, abdomine albescente speculo alarum albo; rostro luteo; ungue nigro._

75. MICROPTERUS PATACHONICUS.--n.o.b. in Proceedings of Zool. Soc.

_Micropt. supra plumbeo grisescens; gula scapularibusque rufescentibus; abdomine speculoque alarum albis; rostro virescenti-nigro, ungue nigro._

Smaller than _M. brachypterus_.

This bird having a smaller body than the first, is enabled to fly; which with the scapulars and the feathers of the throat being of a redder hue than those of _M. Brachypterus_, authorizes its being considered as specifically new.

76. ANAS NIGRICOLLIS.--Ind. Orn. ii. 834.

This bird has a wide range on the South American continent. It frequents the River Plata, Strait of Magalhaens, and several parts of the Western Coast, as far up as Chiloe. {543}

77. ANAS CHILOENSIS.--n.o.b. in Proceedings of Zool. Society.

_An. fronte, genis, abdomine, uropygio, pteromatibusque albis; capite posteriori, collo, dorso inferiori, ptilis, remigibusque primariis, caudaque fuscis; dorso superiori, pectoreque fusco et albo fasciatis; remigibus secundariis et tertiis scapularibusque nitide atris, his albo lineatis; abdominis lateribus crissoque rufescentibus; striga post oculos, lata splendide purpurascenti-viride._

Length about 16 inches. Island of Chiloe.

78. ANAS FRETENSIS.--n.o.b. in Proceedings of Zool. Soc.

_An. gula, genis, collo, pectore, dorsoque anteriori pallide badiis; collo graciliter undulato; pectore dorsoque anteriori atro maculato; dorso abdomineque imis, crisso, caudaque albis nigro fasciatis; dorsi fasciis latis, abdominis gracillimis, caudae sublatioribus, crissi sparsim undulatis; capite supra, remigibus, scapularibusque virescenti-atris; his albo in medio lineatis; tectricibus plumbeo-canis, fascia apicali alba; speculo supra viridi, deinde purpureo, fascia atra apice albo terminata._

_Statura Anatis creccoidis_, n.o.b.

Strait of Magalhaens.

79. ANAS RAFFLESII.--n.o.b. in Zool. Jour. iv. 97.

_An. castaneo-rufa, capite abdomineque medio saturatiorbus; notis dorsi, remigibus, cauda supra, crissoque nigris; ptilis caeruleis, pteromatibus albis, speculo alarum viridi._

A figure of the bird is given in the supplementary plates of the Zool.

Jour. Supp. XXIX.

Length, 20 inches.

Strait of Magalhaens, and Western coast to Chiloe.

This beautiful bird bears the name of the late Sir J. Stamford Raffles, to whose exertions the science of Zoology is under no trifling obligation.

80. ANAS SPECULARIS.--n.o.b. in Zool. Jour. iv. 98.

_An. capite summo, dorso, alis, caudaque nigris: subtus pallide griseus, pectore brunneo undulato: speculo lato purpurascenti-aureo splendente, fascia atra alteraque alba marginato: macula utrinque suboculari, mento, thoraceque albis._

The length of the bird is 26 inches; of the bill 2-3/8; of the wing, {544} from the carpal joint to the extremity of the second quill feather, 11; of the tail 6; of the _tarsi_ 2.

81. ANAS SPECULARIOIDES.--n.o.b. in Zool. Jour. iv. 98.

_An. capite summo corporeque supra fuscis: subtus pallide griseus, pectore rufo-brunneo fasciato: remigibus, crisso, rectricibusque atris: speculo subangusto purpurascenti-aureo splendente, fascia atra, alteraque apicali alba._

The length of the bird is 24 inches; of the bill 2-1/8; of the wing, from the carpal joint to the extremity of the second quill feather, 10; of the tail 6; of the _tarsus_ 1.

Strait of Magalhaens.

This is the common duck in the vicinity of Port Famine, and in the winter months is excellent eating.

82. ANAS CRECCOIDES.--n.o.b. in Zool. Jour. iv. 99.

_An. pallide brunneo-griseus, fusco sparsus notatusque; dorso imo, ptilisque fuscis, his apice rufo; speculo nigro, fulvo marginato._

The length of the bird is 16 inches; of the bill 1; of the wing, from the carpal joint to the extremity of the second quill feather, 8-3/16; of the tail 4-3/8; of the _tarsus_ 1.

{545}

Sh.e.l.lS.

Description of the CIRRHIPEDA, CONCHIFERA, and MOLLUSCA, in a Collection formed by the Officers of H.M.S. Adventure and Beagle, employed between the years 1826 and 1830 in surveying the Southern Coasts of South America, including the Strait of Magalhaens and the coast of Tierra del Fuego. By Captain Phillip P. King, R.N., F.R.S., &c., a.s.sisted by W. J. Broderip, Esq., F.R.S., &c. (From the Zoological Journal.)

The testacea, of which the following paper is a descriptive list, were princ.i.p.ally collected upon the coast of South America; and, upon my arrival in England, were submitted to the examination of Mr. George Sowerby; who very obligingly selected the undescribed species from the collection which had been formed under my superintendence by the Officers of H.M.S.

Adventure and Beagle, employed under my command in surveying the southern coast of South America.

To these gentlemen I am greatly indebted for the unwearied a.s.siduity which they at all times displayed, and for the extent of the collection in this, as well as in other departments of Natural History.