OCR Text |
Show 742 DR. J. E. GRAY ON THE CALYPTRiEiDiE. [June 27, 5. TROCHILINA SOLIDA. Calyptrcea solida, Reeve. Shell high, conical, solid, smooth, opaque, white; inner surface and apex purple brown; internal plate very oblique, white. Hab. Conchagua (C. Ai). 6. TROCHILINA LICHEN. Calyptrcea lichen, Brod. Shell very depressed, white, with a few obscure reddish dots, smooth. Hab. ? 3. POCULINA. Shell conical; base circular, deeply concave ; apex acute, central; nucleus spiral; cavity conical, with an oblique triangular subspiral lamina on one of the sides, which has the pillar bent back so as to form a large deep concavity or umbilicus extending to the apex of the cavity. This genus is distinguished from Mitrella by the apex being distinctly spiral. 1. POCULINA UNGUIS. Calyptrcea unguis, Brod. C. solida, Brod. (Chenu, Man. f. 2340). Shell solid, high, conical, smooth, brown. Hab. ? 2. POCULINA POCULUM. Calyptrcea poculum, Reeve. Shell thin, conical, smooth, white or pale brown. Hab. ? 3. POCULINA AURITA. Calyptrcea aurita, Reeve (Chenu, Man. f. 2336). Shell depressed, conical, broad, thin, pale brown ; outer surface closely and regularly radiately striated. Hab. ? Tribe V. Shell conical, subspiral; the cavity simple, conical; the internal lamina moderate, oblique, irregular, with the edge of the pillar-lip reflexed, forming a narrow elongated deep marginal cavity. GALERUS, Humphr.; Adams. Mitrella, Leach. Mitrula, Gray. Infundibulum, J. Sow. |