12 BULLETIN 53, UNITED STATES NATIONAL MUSEUM. 



461 1. Holoptychius flabellatus Cope. Type. 



Scale. Catskill (Devonian). Coxton Narrows, near Pitts- 

 ton, Pennsylvania. 



Cope, Proc. Amer. Philos. Soc, XXXVI, 1897, p. 75, pi. 2, fig. 2. 



4609. Holoptychius latus Cope. Type. 



Scale. Catskill (Devonian). Factoryville, Pennsylvania. 

 Cope, Proc. Amer. Philos. Soc, XXXVI, 1897, p. 74, pi. 2, fig. 3. 



4604. Holoptychius serrulatus Cope. Type. 



Impression of scale. Catskill (Devonian). Mansfield, 

 Tioga County, Pennsylvania. 



Cope, Proc. Amer. r Philos. Soc, XXXVI, 1897, p. 71, pi. 2, fig. 1. 



4473. Keraterpeton tenuicorne Cope. Plesiotype. 



Partial skeleton on slab. Coal Measures. Linton, Ohio. 

 Cope, Proc. Amer. Philos. Soc, XXXVI, 1897, p. 85, pi. 3, fig. 2. 

 Lepidosteus. See Lepisosteus. 

 2582. Lepisosteus aganus (Cope.) See Clastes aganus. 



2175. Lepisosteus atrox Leidy. Type. 



Anterior dorsal vertebra. Bridger (Eocene). Junction Big 

 Sandy and Green rivers, Wyoming. 



Leidy, Proc. Acad. Nat. Sci. Phila., 1873, p. 97; Rept. U. S. Geol. 

 Surv. Terr., I, 1873, p. 189, pi. 32, figs. 14, 15 (as Lepidosteus). 



3970. Lepisosteus atrox Leidy. See Clastes atrox? 

 3974. Lepisosteus atrox Leidy. See Clastes anax. 



3971. Lepisosteus cycliferus (Cope). See Clastes cycliferus. 

 2584. Lepisosteus integer (Cope). See Clastes integer. 



2173. Lepisosteus simplex Leidy. Cotypes. 



2174. (2) Basi-occipital, centra of three adjoining vertebrae, (1) 



and scales. Bridger (Eocene). Near Washakie Sta- 

 tion, Wyoming. 



Leidy, Proc. Acad. Nat. Sci. Phila., 1873, p. 78; Rept. U. S. Geol. 

 Surv. Terr., I, 1873, p. 191, pi. 32, (2) figs. 18, 26, (1) figs. 31-34 

 (as Lepidosteus). 



2176. Lepisosteus sp. undet. 



Centrum of vertebra. Bridger (Eocene). Junction Big 

 Sandy and Green rivers, 'Wyoming. 



Leidy, Rept. U. S. Geol. Surv. Terr., I, 1873, p. 190, pi. 32, figs. 16, 

 17 (as Lepidosteus). 



2177. Lepisosteus sp. undet. 



Fragment of jaw. Bridger (Eocene). Junction of Big 

 Sandy and Green rivers, Wyoming. 



Leidy, Rept. U. S. r Geol. Surv. Terr., I, 1873, p. 190, pi. 32, fig. 25 

 (as Lepidosteus). 



5477. Lepisosteus sp. undet. 



Four scales. Bridger (Eocene). Little Sandy Creek, Wy- 

 oming. 



Leidy, Rept. U. S. Geol. Surv. Terr., I, 1873, p. 190, pi. 32, figs. 

 35-38 (as Lepidosteus). 



