PLATE LIX. 



Spi'cimeus from the Amyzon shales of South Park, Colorado, and from Osino, Nevada, natural size. 



Fij;. l.—Amia dictijocephaUi. Left side. One of the types from Florissant, Colorado. Page 745. 



Fig. -i.— Amazon meiitale. One of the types from Osino, Nevada. Page 749. 



Fig. 2. — Tricho])hanca liians. Types from Osino, Nevada. Page 753. 



r\'^. i.—Triclwphanes foUaram. From Florissant, South Park, Colorado, type; 4a, scales enlarged. 



Page 7r>:!. 

 Fig. b.—Charadi-iua sheppardianii8. From Florissant, Colorado. Discovered by Dr. Hambacb. Page 755. 



