Narrative of the surveying voyages of his majesty's ships Adventure and Beagle (vol.1): between the years 1826 and 1836 : describing their examination of the southern shores of South America, and the Beagles's circumnavigation of the globe

556 CATALOGUE — SHELLS. 63. BUCCINUM SQUALIDUM. B. testa conico-fusiformi, Jiiscd ; anfractu basalt ventricoso ; spirit viediocri; aperturdjiiscd, lutescenti, patulu ; long. 1J-| ; lat.l^-, poll. Habitat ? Mus. Brit., nost., Brod. 64. BUCCINUM DEFORME. B. testd ovatd, subponderosd, subalbidd, fasciis duabusfuscis obscuris ; spird brevi ; aiifractu basali subdepresso, suturam versus crasso columella valde callosd ; long, l^^g ; lat. 1 paulo plus ; poll. Habitat adjlumen Plata (Gorriti). Mus. Brit., nost. The eggs of this shell, contained in a transparent orbicular nidus, the size of a turtle's egg, were found thrown up on the sea-beach of the island. In the month of January they were observed in all stages of growth. A series was preserved in spirits, and presented to the College of Surgeons. 65. COLUMBELLA MITRIFORMIS. C. testd Jiisiformi, luteo-rufescknte, fasciis nigro-castaneis, mnculis olbis tessellatd ; long, -^q ; lat. -f^ ; poll. Habitat? Mus. Brit., nost., Brod. 66. MiTRA PUSILLA. M. testd ovato-acutd, ventricosu, Julvd, creberrinie costaid ; costis inlerstitiisque striatis, basi granulosd ; spird brevi, a tifractibus su- turam supereminentibus ; columelld quinque-plwatd ; long, f ; lat. -^Q paulo plus ; poll. Habitat? Mus. nost. The denticules of the outer lip are arranged in pairs, at regular, and somewhat distant, intervals. 67. VOLUTA. A fragment of a turbinated shell, bearing marks more assignable to Voluta than to any other genus, was found on the sea-beach in the neighbourhood of Cape Fairweather, on the east coast of Pata- gonia, in latitude 5I|° south. The remains appear to differ from Valuta Ancilla and F. Brasiliana.