894 PL'OCEEDIXGS OF THE XATIOXAL MUSEUM. VOL. xx. 



PLATE LXXXIX. 







Fig. 1. Cryptodon obsoletus Verrill and Bush, p. 789. Exterior of right valve of a 

 specimen from station 949; X about 20. 



2. The same. Interior of left valve of the same specimen. 



3. Leptaxinns miiuitu* Verrill and Bush. p. 797. Hinge of left valve of type 



specimen No. 45686; X 45. 



4. The .same. Hinge of right valve of the same specimen. 



5. The same. Interior of the same valve ; x 30. 



6. Cryptodon plicatus Yerrill, p. 786. Interior of left valve of a young specimen 



No. 44826; X 9. 



7. Cryptodon (Axinulus) breris Yerrill and Bush, p. 790. Exterior of left valve 



of type specimen from station 2208 ; X about 22. 



8. The same. Interior of right valve of the same specimen. 



PLATE XC. 



Fig. 1. Cryptodon (Axinulus') inequalis Yerrill and Bush, p. 791. Exterior of right 

 valve of type specimen from stations 98-99; X about 10. 



2. The same. Interior of left valve of the same specimen. 



3. Cryptodon croulinensis (Jeffreys) Smith, p. 786. Interior of left valve of a 



specimen from stations 62-65 ; X about 13. 



4. The same. Exterior of right valve of the same specimen. 



5. Axinodon cllipticiis Yerrill and Bnsh, p. 796. Exterior of right valve of type 



specimen No. 35175 ; x about 13. 



6. The same. Interior of left valve of the same specimen. 



7. TelUmya ferruginosa (Montagu), p. 783. Interior of left valve of specimen 



No. 49588; X 20. a, Cartilage. 



8. The same. Interior of right valve of the same specimen. 



PLATE XCI. 



Fig. 1. Cryptodon insignia Yerrill and Bush. p. 785. Interior of a left valve No. 52733 

 from station 2499; X about 14. 



2. The same. Exterior of a left valve from the same station; x about H. 



3. Montucittn ti'iquetra Yerrill and Bush, p. 782. Interior of right valve of type 



specimen from station 2307; X 24. 



4. Moiitai'iila cuneata Verrill and Bush, p. 782. Exterior of right valve of a 



specimen from station 2278; X 17. 



5. Cryptodon equalis Yerrill and Bush, p. 788. Hinge of both valves of a speci- 



men from station 18 Jiacltc; X about 5. 



6. The same. Exterior of left valve of specimen No. 74302; x about 5. 



7. Cryptodon (Axinulus) ot'atus Yerrill and Bush, p. 793. Interior of left valve 



of type specimen from station 949; x 35. 



8. KeUleUa nitida Verrill, p. 778. Interior of left valve of specimen No. 37971; 



X 14. 



PLATE XCII. 



Fig. 1. Axinodon dlipticus Yerrill and Bush, p. 796. Hinge of left valve of type 

 specimen No. 35175; x about 26i. 



2. Limopsis sulcata Yerrill and Bush, p. 845. Interior of a right valve from 



station 2199; X 4. 



3. Cryptodon (Axinulus) simplex Yerrill and Bush, p. 791. Hinge of right valve 



of type specimen from station 1093; X about 13. 



4. The same. Interior of left valve of the same specimen. 



5. Axinopsis orbiculata Sars, variety inequalis Yerrill and Bush, p. 794. Interior 



of left valve of type specimen from Eastport, Maine, 1872; X about 13. 



