OCR Text |
Show 34 ZOOLOGICAL COLLECTIONS MADE DURING [Jan. 4, TROCHUS (CHLOROSTOMA) ATER, Lesson. Hab. Station 4. TROCHUS (CHLOROSTOMA), sp., jun. Hab. Station 2. Three specimens, apparently immature, are closely allied to T. luctuosus, d'Orb., = T. bicarinatus, Pot. & Mich. TROCHUS (ZIZIPHINUS) CONSIMILIS, sp.n. (Plate IV. fig. 11.) Shell pyramidal, of a very pretty purplish lilac colour, encircled with pale transverse ridges. Whorls 7; the nuclear one rounded, white; the rest flat, with three to four strong spiral lirse, whereof the uppermost, or the two uppermost, are more or less granulous. The interstices are smooth, with the exception of oblique lines of growth. Suture marked by a thread-like keel. Last whorl acutely angled below the middle, with a flattish base, which has two or three sulci near the angle, and two white or pale lilac lirse encircling the umbilical region. Aperture somewhat obliquely quadrangular; columella pearly, margined with a white callosity. Height 11 millims., greatest diam. of base 9, smallest 8. Hab. Station 5 ; and Cockle Cove, between tide-marks. A very pretty species, easily recognized by its colour and sculpture, and recalling to some extent the northern T. alabastrum, Beck. SlPHONARIA LESSON I, JU11. Hab. Station 3. FISSURELLA PICTA, Gmeliu. Hab. Stations 3 and 5. FISSURELLA, ALBA, Philippi. Hab. Station 7. DENTALIUM, sp. Hab. Station 5. I am not aware of any species of Dentalium having been recorded from this region. The single shell obtained is a dead specimen, quite straight, very slowly enlarging, and exhibiting only lines of increment and no longitudinal striae. It has a length of 29 millims., and is 2 in diameter at the oral orifice. PATELLA (NACELLA) MYTILINA, Gmelin. Hab. Tom Bay, on rocks at low water. This variable species was also collected at Kerguelen Island ; and in a paper in the ' Philosophical Transactions,' upon the Mollusca collected during the Transit-of-Venus Expedition to that region, I have given comparative remarks upon the different varieties which have been described as distinct species. PATELLA (PATINELLA) ^ENEA, Martyn. Hab. Trinidad Channel, on rocks. |