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the epidermis, but also when this has been removed. The apex in the new species is sharper 

 and more elevated than in radiata. 



The animal has two epipodial filaments near the posterior part of the foot. The radula 

 differs in many respects from that of C. radiata. The rhachidian tooth (R) is nearly quadrate, 

 with convex sides and front margin, and sharp corners, the front and side margins are thickened, 

 the first has a very small simple cusp. The first lateral (i) has an oblong body and probably 

 in a normal position 2 or 3 denticles, the second lateral (2) is still more elongated, with 2 or 

 3 denticles, the third (3) has a simple cusp; the fourth (4) much larger lateral, has a very large 

 cusp, with a smaller denticle below it. The uncini are hooked, with simple cusps. The number 

 of denticles in the laterals is rather inconstant, on the right side the first one has 2 or 3 

 denticles, but on the left side only one ; in the second the number varies from 2 to 3 on the 

 right side, on the left I constantly see 3 denticles. The most conspicuous differences from C. 

 radiata are : the quadrate rhachidian tooth, which in radiata according to Thiele (Die beschalten 

 Gastrop. der deutschen Tiefsee-Exp. p. 152, PI. 6, fig. 13) is much longer in proportion to its 

 breadth, and in its simple cusp, which in radiata has small denticles, (Thiele, 1. c. p. 153). 



3. Coccitlina cingiilata n. sp. PI. I, fig. 6. 



Stat. 137. Channel between Makjan and Halmaheira. 472 M., fine, dark muddy sand. i Spec. 



Shell small, yellowish, patelliform, rather depressed, oval, with moderately curved sub- 

 parallel sides and bluntly rounded ends. Front slope the largest, convex, posterior slope nearly 

 straight, especially under the apex, but slightly convex towards the margin, side slopes slightly 

 convex. Sculpture consisting of (for the small shell) conspicuous, regular, concentric lirae, separated 

 by much broader intervals, which are crossed by much weaker radiant striae. The nucleus, which 

 is placed at about 3 / g of the length of the shell, is slightly compressed, directed backwards, and 

 is spiral on the right side. Inside porcellaneous. 



Long. 2 5 / 6 , lat. 2 1 / i , alt. 1 Mill. 



The animal seems to have two short but broad epipodial appendages on each side of 

 the posterior end of the foot, but on account of the smallness of the much shrunken animal, 

 they are very inconspicuous. 



This species seems to be allied to C. lc/>taleaVevri\\, (Trans. Connecticut Acad. VI, p. 202, 

 PI. 32, fio-. 20, 20tf, 20 <5) according to the description and figures copied by Pilsbry (Man. of 

 Conch. Vol. XII, p. 133, PI. 2, fig. 7, 8) but the nucleus is more central in the new species, 

 the outline of the base is broader in proportion to its length, it is more depressed than kptalea. 

 The sculpture seems to be similar, however the radial striae are less conspicuous, the concentric 

 lirae are less crowded near the apex. 



4. Coccitlina ovata n. sp. PI. I, fig. 7; PI. VIII, fig. 10. 



Stat. 312. Saleh-bay, North coast of Sumbawa. 274 M., fine, sandy mud. 3 Spec. 



Shell small, patelliform, oval, with subparallel sides, moderately depressed, white under 

 a thin, yellowish, fibrous epidermis, ends broadly rounded and elevated, the anterior slope, which 



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