ACTINOPTERI. 



i55 



in mandible. Vertebra? about 60 (=25 + 35)- Centra ex- 

 hibiting two deep longitudinally extended pits on each side. 

 About 20 species. 



Saurocephalus leanus (Hays). 



Saurodon lea Hays, Tr. Amer. Philos. Soc. Phila., (2) III, 1830, p. 476. 



Upper Cretaceous of Pcnsauken Creek. 

 Saurodon leanus Hays, 1. c, p. 477, PI. 16, figs. 1-10 (type). 



Cope, Proc. Amer. Philos. Soc. Phila., XI, 1870, p. 536 (compiled). 

 Cope, U. S. Geol. Surv. Wyom., 1871, p. 421 (reference). 

 Cope. Rep. U. S. Geol. Surv. Terr., II, 1875, p. 255. (Greensand No. 5, 

 N. J.) 

 Saurocephalus leanus Harlan, Tr. Geol. Soc. Pa., I, pt. 1, 1834, p. 83 (not 

 consulted). 

 Harlan, Med. Phys. Res., 1835, p. 286 (remarks). 

 Morton. Amer. Journ. Sci. Art., XXVIII, 1835, p. 2yj (name only). 

 Leidy, Proc. Acad. Nat. Sci. Phila., 1856, p. 302 (compiled). 

 Leidy, Tr. Amer. Philos. Soc. Phila., XI, 1857, pp. 91, 94, PI. 6, figs. 12-15 

 (largely compiled). 



Fig. 94. — Saurocephalus leanus (Hays). 1-2, Allowaystown (Yarrow), and. 

 others type (from Hays). 



