136 COCCULINA. 



tinct outer crust nor any particular shape, to the aggregations of this 

 sort which have come under my notice, but they seem to be prefer- 

 ably attached to prominences of the sculpture, and might easily be 

 mistaken, in some cases, for part of the shell itself. 



This Cocculina has fine sharp spines, properly belonging to the 

 shell ; but among those in the Jeffreys's collection I have seen none 

 quite as sharp and long as those in the magnified figure (la) of the 

 plate to Dr. Jeffreys paper on the Triton mollusks. 



The section Coccopygia, to which I have referred this species, 

 probably includes C. angulata Watson, and other species which have 

 not yet been critically examined with regard to the epipodial fila- 

 ments. (Dall.) 



Cocculina spinigera Jeffreys, P. Z. S. 1883, p. 393, t. 44, f. 1, 

 la, lb, lc— Dale, Blake Gastrop., p. 348-350, t. 31, f. 7, 8, 9. 



C. corrugata Jeffreys. PI. 25, figs. 11, 12. 



Shell oval, convex, but somewhat depressed, thin, opaque and 

 lustreless ; sculpture : regular, fine and close-set concentric striae or 

 WTinkles, which are chiefly observable and stronger round the mar- 

 gin, especially in front or at the broader end ; color chalky-white, 

 except at the margin, which is yellowish-brown ; beak small, in- 

 curved and slightly twisted to one side ; the spire has a single 

 whorl ; the beak is placed close to the hinder margin, and nearly 

 overlaps it ; mouth oval ; inside smooth ; no septum. (Jeffreys.) 



Length '075, breadth '05 in. 



Northeast Atlantic. 



A few specimens, with the last, and occurring under the same cir- 

 cumstances. This species differs from C. spinigera in size, sculpture 

 and the position of the beak. It is also eyeless. (Jeffreys.) 



Cocculina corrugata Jeffreys, P. Z. S. 1883, p. 394, t. 44, f. 2, 2a. 



C. pusilla Jeffreys. PI. 25, fig. 22. 



Shell roundish-oval, somewhat depressed, rather thin, opaque and 

 lustreless ; sculpture : extremely numerous, crowded and irregular, 

 delicate, minute strise, which radiate toward the margin as in other 

 species, and cover the whole surface ; color whitish ; beak placed at 

 less than one-third from the front margin ; it is slightly incurved 

 and pinched-up ; apex apparently deciduous ; mouth roundish-oval ; 

 margin thin ; inside smooth and glossy ; scars indistinct. (Jeffreys.) 



Length 0125, breadth O'l in. 



North Atlantic. 



Tectura pusilla, Jeffr. P. Z. S. 1882, p. 672, t. 50, f. 3.— Coc- 

 culina pusilla Dall, Blake Rep. p. 345. 



