| OCR Text |
Show 1867.] DR. J. E. GRAY ON THE CALYPTRiEID^E. 741 2. MITRELLA SPINIFERA, n. s. (not named). Shell depressed, pellucid, orown-spotted, rugose, with oblique radiating ridges armed with tubular spines. Hab. Kurrachee. Internal lamina imperfect. See Trochita spinulosa, Chenu, Man. f. 2344. 3. MITRELLA SUBREFLEXA. Calyptrcea subreflexa, Carpenter. Pale brown, smooth, pellucid. Hab. California. 4. MITRELLA PELLUCIDA. Calyptrcea pellucida, Reeve. Shell very thin, transparent, smooth. Hab. - ? 2. TROCHILINA. Shell like former; but the internal plate is much more oblique and spiral, and the reflexed part of the upper portion of the pillar-lip is united to the surface of the plate, forming a short deep compressed perforation near the apex of the cavity. 1. TROCHILINA CONICA. Calyptrcea conica, Brod. Shell conical, rather thin, pale, brown-spotted, smooth. Hab. ? This shell varies greatly in the extent of the internal lamina : in most specimens it occupies much more than one whorl; but in another, which may have been injured, the plate does not occupy more than one-third of a whorl. 2. TROCHILINA FASTIGIATA. Calyptrcea fastigiata, Gould. Shell conical, circular, smooth, with a smooth pale-brown periostraca. Hab. Vancouver's Island. 3. TROCHILINA ADSPERSA. Calyptrcea adspersa, C. B. Adams. Shell depressed, pellucid, brown-dotted. Hab. ? 4. TROCHILINA MAMILLARIS. Calyptrcea mamillaris, Brod. Shell solid, white, smooth, opaque, with a red or purple tip ; internal plate very thin, transparent. Hab. California. i |
