202 



Coll., vol. xii., 1885-1886, p. 301, pi. ii., figs. 2 and 2a; also 

 No. 425, p. 68, pi. ii., figs. 2 and 2a, in Bull, of the U.S. 

 National Mus., xxxvii., 1889. Type locality. — North Atlan- 

 tic, from 100 to 539 fathoms; also Chall. Zool., xiii., 1885, 

 p. 52, pi. ix., figs. 8, 8&. Locality. — Bermudas, 425 fathoms, 

 coral mud ; here by the artist's mistake the clavicular process 

 is omitted from the figure. But, judging from the illustra- 

 tions and measurements given, our species differs in having 

 a slightly longer rostrum, in being much smoother, and in 

 its more spoon-shaped clavicle. 



EXPLANATION OF PLATES. 



Plate XI. 

 Fig. 1. Puncturella (Cranopsis) corolla, Verco, ventral view. 

 „ 2. „ „ „ „ young specimen 



showing proto- 

 conch. 

 „ 3. „ „ „ „ dorsal view. 



,,4. ,, ,, ,, ,, sculpture. 



,, 5. ,, ,, ,, pronle. 



,,, 6. Emarginula suhtilitexta, Verco, profile. 

 ,, 7. „ ,, ,, dorsal view. 



,,8. ,' ,, ,, sculpture. 



,., 9. Cuspidaria dorsirecta, Verco, exterior. 

 ,, 10. ,, ,, ,, interior. 



Plate XII. 



,, 1. Arcoperna scapha, Verco, prodissoconch. 



,, 2. ,, ,, ,, profile, joined valves. 



,, 3. ,, ,, ,, interior. 



„ 4. ,, ., ,, exterior. 



„ 5. ,, ,, ,, shell tilted up, so as to show 



the deep groove for the re- 

 ception of the ligament. 



,, 6. Cuspidaria exarata, Verco, exterior. 



,,7. ,, ,, ,, interior. 



Plate XIII. 

 ,, 1. Cuspidaria ros, Verco, exterior, lateral. 

 ,, 2. „ „ „ ,, joined valves. 



„ 3. „ „ „ hmge. 



4. 

 ,, 5. Cuspidaria pinna, Verco, exterior, lateral. 

 „ 6. „ „ ,, hinge. 



7. 



,, 8. Cuspidaria alta, Verco, exterior, lateral. 

 ,, 9. „ „ „ hinge. 



>) ^Y* }j jj jj J' 



,, 12. Modiola projecta, Verco, interior, lateral. 

 ,,13. ,, ,, ,, exterior. 



,, 14. Modiolaria semiradiata, Verco, exterior, lateral. 

 ,,15. ,, ,, ,, interior. 



