Weller — Kinderfiook Faunal Studies. 213 



Win. Two views of one of the type specimens. U. of M. Coll. No. 1338.— 

 23. Productus arcuatus Hall. U. of M. Coll. No. 6661.— 24-25. Productus 

 morbillianus Win. Two views of one of the type specimens. U. of M. Coll. 

 No. 2003. 



Plate XV. — 1-2. Dexiobia ovata (Hall). Two views of WinchelPstype of 

 the genus. U. of M. Coll. No. 1425.— 3-4. Dexiobia halliWm. Two views 

 of the type specimen. U. of M. Coll. No. 1403.— 5-6. Pernopecten cooperen- 

 sis (Shum.). 5. The type specimen of Aviculopecten Umaformis W. & W. 6. 

 The type of the genus Pernopecten. U. of M. Coll. No. 1388. — 7. Pterino- 

 pecten nodocostatus (W. & W.). The type specimen. U. of M. Coll. No. 1390 

 (in part). — 8-9. Nucula iowensis W. & W. Two of the type specimens. 

 U. of M. Coll. No. 1423. — 10. Spathella phaselia (Win.). The type speci- 

 men. U. of M. Coll. No. 1404. — 11. Sphenotus cylindricus (Win.). The 

 type specimen. U. of M. Coll. No. 1413. — 12. JEdmondia strigillata Win* 

 The type specimen. U. of M. Coll. No. 1409. — 13. Edmondia nuptialis 

 Win. The type specimen. U. of M. Coll. No. 1407. — 14. Macrodon 

 parvus W. & W. The type specimen. U. of M. Coll. No. 1421. — 15-16. 

 Palaeoneilo microdonta (Win.). Two of the type specimens. U. of M. Coll. 

 No. 1424. — 17-18. Palaeoneilo barrisi (W. &W.). Two of the type speci- 

 mens. U. of M. Coll. No. 1425. — 19. Lithophaga minutan. sp. The type 

 specimen. U. of M. Coll. No. 1401. — 20. Leda saccata (Win.). View of 

 an average specimen. U. of C. Coll. No. 6667. — 21-22. Schizodus trigonalis 

 (Win.). Two specimens, the larger of which is the type. U. of M. Coll. 

 No. 1419 (in part). D. of C. Coll. No. 6666.-23-24. Bucanopsis perelegans 

 (W. & W.). The largest of the type specimens. U. of M. Coll. No. 1437. — 

 25. Straparollus sp. undet. U. of C. Coll. No. 6665.-26-27. Straparollus 

 angulans Weller. Two views of one specimen. U. of t M. Coll. No. 1454. — 

 28. BellercpJion sp. undet. U. of C. Coll No. 6664. — 29. Dentolium grandae- 

 vum Win. One of the type specimens. U. of M. Coll. No. 1447. 



Plate XVI. — 1. Orthothetes sp. undet. U. of C. Coll. No. 6671. — 2-3. Or- 

 thothetes inflatus (W. & W.). Two of the type specimens, a pedicle and a 

 brachial valve. U. of M. Coll. No. 1353. — 4-5. Schizophoria subelliptica 

 (W. & W.). Two views of one of the type [specimens. U. of M. Coll. 

 No. 1349. — 6. Rhipidomella burling tonensis (Hall)? A pedicle valve. U. of 

 C. Coll. No. 6670. — 7-8. Leptaena rhomboidalis Wilck. Two views of one 

 specimen. U. of M. Coll. No. 1347. — 9. Chonetes burlingtonensis n. sp. The 

 type specimen. U. of C. Coll. No. 6669. — 10-11. Chonetes logani N. & P. 

 View of a rather large specimen and an enlai-gement of the minute surface 

 characters. U. of C. Coll. No. 6668. — 12-14. Productella concentrica 

 (Hall). One view of a brachial and two views of a pedicle valve. U. of 

 C. Coll. No. 6672. — 15. Productus arcuaUis Hall. Lateral view of an aver- 

 age specimen. U. of C. Coll. No. 6673. — 16-17. Spirifer marioyiensis 

 Shum. A pedicle and a brachial valve. U. of C. Coll. No. 6674. — 18-24. 

 Athyris crassicardinalis White. Several views of type specimens. U. of M. 

 Coll. No. 1358 (in part). — 25-27. Cleicthyris hirsula Hall. Three views 

 of one specimen. U. of M. Coll. No. 1358 (in part). 



Plate XVII. — 1. Pernopecten cooperensis (Shum.). A specimen of aver- 

 age dimensions. U. of C. Coll. No. 6675. — 2-3. Concardium pulchellum 

 W. & W. Two views of the type specimen. U. of M. Coll. No. 1427. — 4-5. 

 Strophostylus bivolve (W. & W.). Two views of one of the type specimens. 



