104 
BULLETIN OF THE LABORATORIES 
PLATE III. 
Fig [. 
Creriipecten senilis, sp. n , left valve. 
Fig. 2. 
Spi> ifer hntus. M. and W. ? 
Fig- 3 - 
Platyceras, sp. 
Fig. 4. 
Streblopteria media, small right valve. 
Fig. 5 - 
Aviculopecten (cf. Oiveni.) 
Fig. 6. 
Leiopteria, sp. 
Fig. 7. 
Aviculopecten, right valve. 
Figs. 8, 9. Streblopteria tnedia, sp. n., left and right valve. 
Fig. 10. Limatiilina ohioensis, n. sp., left valve. 
Fig. II. Atrypa reticularis? 
Fig. 12. Hemipronites c 7 'enistrio?, young. 
Fig. 13. Chonetes, sp. 
Fig. 14. Chonetes pulchella. Win. 
Figs. 15, 16. Nucula^ sp. ? 
Fig. 18. Pi'oductus arcuatus, H. 
Fig. 19. Osti'acode crustacean. ' 
Fig. 20. Productus jieiningi. 
Fig. 21. Chonetes illinoisensis. 
Fig. 22. Productus, sp. 
P'ig. 23. Spirifer striatif or mis, (cf. tullia, H.) 
Fig. 24. Prodtictella ? 
Fig 25. Pi'oductus nebrascensis. 
Fig. 26. Spirifer striatifonhis, camera drawing of striae. 
Fig. 27. Pholadella' newbet-jyi, xxghi \SL\\e. 
Fig. 28. Productus lachiymosus, vd.i\‘stigfnarius, H. 
Fig. 29. He 77 iip 7 '- 07 iites crenistria. 
Fig. 30. Promaci'us truncatus, sp. n., dorsal view. 
Fig. 31. Avictdopecten 7 iewarkensh, Win. ? 
Fig. 32. Hypostome of Phillipsia shumaj'di? 
PLATE IV. 
Fig. I. See page 75. 
P'ig. 2. Sanguinolitcs naiadiformis. 
Tig. 3. .Palceoneilo attenuata. 
Fig. 4. Pholadella nezobei'ryi. 
Fig. 5. Edmondia ? 
Fig. 6. Myalma michiga^iensis. 
Fig. 7. Nucula, sp ? 
Fig. 8. Gram 7 nysia, imperfect cast. 
Fig. 9. Pal(Z 07 teilo plicatella, small individual. 
Fig. 10. Modiola waverlyensis. 
