CASE— AMPHIBIA AND PISCES 



PLATE 25 





&!i ^'" *-^'*<r < ? I ■r' <^ -sj Xi f' ^.i" 





il ' ;^¥^''i^fe'^i?i;''Sl 



if'. 



^f; 







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2. Abdominal armor of Cricotus heteroclitus. No. 4550a Am. Mils. X 



3. A fragment of the abdominal armor of Cricotus. X %. 



4. Skull of Cricotus heterocliius. No. 4551 Am. .Mus. X !^. 



