34 ZOOLOGICAL COLLECTIONS MADE DURING [Jail. 4, 



Trochtjs (Chlorostoma) ater, Lesson. 

 Hab. Station 4. 



Trochtjs (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. u. (Plate IV. fig. II.) 



yhell pyramidal, of a very pretty purphsh lilac colour, encircled 

 with pale* transverse ridges.' Whorls 7; the nuclear one rounded, 

 white ; the rest flat, with three to four strong spiral lirae, 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-hke 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 liree encircling the 

 umbilical region. Aperture somewhat obliquely quadrangular; 

 columella pearly, margined with a white callosity. Height 1 1 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 sculp- 

 ture, and recaUing to some extent the northern T. alabastrum. Beck. 



SiPHONARIA LE960NI, jUU. 



Hab. Station 3. 



FissuRELLA PiCTA, Gmeliu. 

 Hab. Stations 3 and 5. 



FissuRELiA, ALBA, Philippi. 

 Hab. Station 7. 



Dentalium, sp. 



Hab. Station a. 



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 incre- 

 ment 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 INIoUusca 

 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) ^nea, Martyn. 

 Hab. Trinidad Channel, on rocks. 



