or 
or 
ir) 
CATALOGUE—SHELLS. 
63. BuccinuM sQUALIDUM. 
B. testa conico-fusiformi, fuscd ; anfractu basali ventricoso; spiré 
mediocri ; aperturd fuscd, lutescenti, patuld ; long. 145; lat. 1335 
poll. 
Habitat? Mus. Brit., nost., Brod. 
64. BuccINUM DEFORME. 
B, testd ovatd, subponderosd, subalbidd, fasciis duabus Suscis obscuris ; 
spird brevi ; anfractu basali subdepresso, suturam versus crasso ; 
columelldé valdé callosd ; long. 1-9, ; lat. 1 paulo plus ; poll. 
Habitat ad flumen 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 fusiformi, luteo-rufescente, fasciis nigro-castaneis, maculis 
albis tessellatd ; long. +’, ; lat. 3, ; poll. 
Habitat? Mus. Brit., nost., Brod. 
66. MITRA PUSILLA. 
M. testd ovato-acutd, ventricosd, fulvd, creberrimé costatd ; costis 
interstitiisque striatis, basi granulosd ; spird brevi, anfractibus su- 
turam supereminentibus ; columelld quinque-plicatd; long. 2; 
lat. 5, 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 513° south. The remains appear to differ from 
Voluta Ancilla and V. Brasiliana. 
