CASE— AMPHIBIA AND PISCES 



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1, la, Id. Janassa striffilina, front, posterior, and side views. Tj'pe. X 3. No. 5500 Univ. of Chicago. 



2, 2(Z, 2b. Janassa gurlcyana, front, posterior, and side views. Type. X 3. No. 5501 Univ. of Chicago. 



3, 3', Sa, 36, Fragmentary head spines of PlciiracantJius qiiadriscriatiis, ventral view; X 3. ia, id, 



sections taken at levels indicated in figs. 3, 3'. No. 5502 Univ. of Chicago. 



4, 4', 4a, 4b, Fragmentary head spines oi /'/citracaii //i us gracilis Newb. , ventral view. X 3. 4a, Ab, 



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



5, 5a, 5b. Anodoiitacaiit/iiis americaniis n. sp. X 2. Type. No. 7934 Am. Mus. Te.xas. 5(7, 5i, sections 



taken at levels indicated in fig. 5. 



6, Sagenodus dialophus. Left lower dental plate. Type. X 1"% No. 7234 Am. Mus. 



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



8-11. Sagenodus fossatus. X l/^- tii Immature left mandibular plate. Type. No. 6506 Univ. of 

 Chicago. 9, Inci^mplete upper dental plate. Type of (17(7/t'(///5^//r/«'a«?/5 Cope. No. 6509 Univ. of 

 Chicago. 10, V)a, Lower dental plate. Type of Ctenodus povrectus Cope. No. 7235 Am. Mus. 

 11, Lower dental plate. Type of Ctenodus vabaseiisis Cope. No. 6510 Univ. of Chicago. 



