sin; I'!:<K'EEDINGS OF THE NATIONAL j/rs/:r.i/. VOL.XX- 



Fig. 5. Clhlioplwra iiwrnatti Vcrrill and Busli, p. 819. Hinge of both valves of 

 specimen No. 49760 from station 327; X about 2-i. 



6. The same. Exterior of a left valve of a specimen from the same station; 



X about 2i. 



7. Lyonsiella cordata Verrill and Bush, p. 818. Hinge of left valve of type 



specimen No. 52540; X 8. a. Ossicle; b, ligament. 



8. The same. Exterior of right valve of the same specimen; X about 4. 



9. Lhnopsix snlcaia Verrill and Bush, p. 845. Hinge of a right valve from 



station 2199; X about 10A. 



10. Xucuhi rerrUUi Dall, p. 853. Hinge of left valve of specimen No. 45752; 

 X about 26. 



PLATE XCVI. 



Fig. 1. Llmopsis snlcata Verrill and Bush. p. 845. Exterior of a right valve from 

 station 2199; X 16. 



2. Clioristoilon (?) canceUatits Verrill, p. 778. Hinge of a left valve (type speci- 



men) No. 44839; X 16. 



3. The same. Exterior of the same valve ; x 6. 



PLATK XCVII. 



Fig. 1. (Humus Hiti-ns Jeffreys, p. 848. Interior of left valve of specimen No. 

 78784; x 12. 



2. The same. Hinge of the same; X 20. 



3. YoldieUa rjrpansa (Jeffreys), p. 871. Interior of right valve of specimen No. 



7X363; X 16. 



4. Malletia obtusa (M. Sars) Morch, p. 874. Interior of left valve of a very .young 



specimen from station 2706; X 20. 



5. Ajcinopsis cordata Verrill and Bush, p. 795. Interior of a left valve from sta- 



tion 2307; X 16. 



6. The same. Interior of a right valve from station 1092; X 16. 



7. Mallttia alnjssorum Verrill and Bush, p. 875. Interior of right valve of 



type specimen No. 52159; X 12. 



8. Yoldlella ciuia Verrill and Bush, p. 868. Interior of right valve of type speci- 



men No. 38457; x 20. 



9. Hyalopeclen. dilectits Verrill and Bush, p. 836. A portion of the exterior of 



both valves of type specimen No. 52539; X 8. 



