CASE— AMPHIBIA AND PISCES 



lb 



a 



3,! 



o 



3/. 



4' 



o 



bb 



iyc^i"^ 



lOa 



1, Iff, \b. Janassa strigiUna, front, posterior, and side views. Type. X 3. No. 6500 Univ. of Chicago. 

 Z, la, lb. Janassa giirleyana, front, posterior, and side views. Type. X 3. No. 6501 Univ. of Chicago. 

 i, 3', 3ff, ib. Fragmentary head spines of Pletiracaiit/uis quadriseriaius, ventral view; X 3. off, 36, 

 sections' taken at levels indicated in figs. 3, 3'. No. 6502 Univ. of Chicago. 



4, 4', 4ff, 4A, Fragmentary head spines oi Plei/ramni/ius graciiis Newb., ventral view. X 3. 4ff, 4*, 



sections taken at levels indicated in figs. 4, 4'. No. 6503 Univ. of Chicago. 



5, 5ff, 5b. Anodontacanthus americanus n. sp. X 2. Type. No. 7934 Am. Mus. Texas. 5ff, 5«, sections 



taken at levels indicated in fig. 5. 

 Sagenodiis dialophiis. Left lower dental plate. Type. X \% No. 7234 Am. Mus. 

 Sagenodus dialophiis. Dental plate, X 1%. No. 7470 Am. Mus. 



6. 



7. 



8-11. Sagenodus fossa/us. X IX- 8. Immature left mandibular plate. Type. No. 6.506 Univ 



of 

 Chicago. 9, Incomplete upper dental plate. Type oi aeiiodiis gi/iieyan us Cope. No. 6509 Univ. of 

 Chicago. 10, lOff, Lower dental plate. Type of Ctenodits fionrctus Cope. No. 7235 Am. Mus. 

 11, Lower dental plate. Type of Ctenodiis vabasensh Cope. No. 6510 Univ. of Chicago. 



