TYPE-SPECIMENS OF FOSSIL VERTEBRATES. 11 



4848. Elonichthys hypsilepis Ha}-. Reverse of type. 



Impression of fish in nodule. Upper Coal Measures. Mazon 

 Creek, Grundy County, Illinois. 



Hay, Proc. Amer. Philos. Soc. XXXIX, 1900, pp. 117, 120, pi. 7 (as 

 Elonichthys peltigerus hypsilepis). 



2180. Enchodus shumardi Leidy. Type. 



Dentary bone containing six teeth. Cretaceous. Nebra.ska. 



Leidy, Proc. Acad. Nat. Sci. Phila., 1856, p. 257; Rept. U. S. Geol. 

 Surv. Terr., I, 1873, pp. 289, 347, pi. 17, fig. 20. 



2350. Eriptychius americanus Walcott. Type. 



Scales. Middle Ordovician. Near Canyon City, Colorado. 



Walcott, Bull. Geol. Soc. Amer., Ill, 1892, p. 167, pi. 4, figs. 5-1 1. 



3997. Erismatopterus endlichi Cope. Type. 



Skeleton on slab. Green River (Eocene). Twin Creek, 

 Wyoming. 



Cope, Bull. Geol. and Geogr. Surv. Terr., Ill, 1877, p. 811; Rept. 

 U. S. Geol. Surv. Terr., Ill, 1884, p. 82, pi. 12, fig. 5. 



2588. Galeocerdo .sp. undet. 



Tooth. Wasatch (Eocene). Gallinas Creek, New Mexico. 



Cope, Rept. U. S. Geogr. Surv. W. looth Merid., IV, Pt. II, 1877, 

 pi. 22, fig. 16. 



2590. Galeocerdo pristodontus (Agassiz). Plesiotype. 



Tooth. Wasatch (Eocene). Gallinas River, New Mexico. 



Cope, Rept. U. S. Geogr. Surv. W. looth Merid., IV, Pt. II, 1877, 

 p. 38, pi. 22, fig. 18. 



= Corax pristodontus. 



2583. Gar sp. undet. 



Scales and opercular bones. Wa.satch (Eocene). Gallinas 

 River, New Mexico. 



Cope, Rept. U. S. Geogr. vSurv. W. looth Merid., IV, Pt. II, 1877, 

 pi. 23, figs. 30, 31. 



3518. Helodus coxanus Newberry. Type. 



Symphysis teeth. Keokuk (Mississippian). Keokuk, 

 Iowa. 



Newberry, Trans. N. Y. Acad. Sci., XVI, 1897, p. 301, pi. 24, fig. 24. 



= Chitinodus latus. 



1682. Heniiptychodus mortoni (Mantell). See Ptychodus mortoni. 

 5461. 



1 98 1. Holonema rugosa (Claypole). Plesiotype. 



Scale. Catskill (Devonian). Mansfield, Tioga County, 

 Pennsylvania. 



Cope, Proc. U. S. Nat. Mus., XIV, 1891, p. 456; Proc. Amer. 

 Philos. Soc, 1892, p. 223, pi. 7, fig. 2. 



1982. Holonema rugosa (Claypole). Plesiotype. 



Pectoral spine. Catskill (Devonian). Mansfield, Tioga 

 Count}', Pennsylvania. 



Cope, Proc. U. S. Nat. Mus., XIV, 1891, p. 456, pi. 30, fig. 7, 



