480 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 



Encrinurus vigilans Continued. 



Encrinuriis vigilans Billings, Geol. Canada, Geol. Surv. Canada, 1863, p. 952 (gen. 



ref.)- Lesley, Geol. Surv. Pennsylvania, Rep. P 4, 1889, p. 216, figs. 

 Cybele vigilans Hall, 12th Rep. New York State Cab. Nat. Hist., 1859, p. 67 (gen. 



ref.). 

 Trenton: Middleville, etc., New York. 



Encrinus curvatus Eaton. 



Encrinus curvatus Eaton, Geol. Textb., 2d ed., 1832, p. 128, pi. 1, fig. 4. 

 Ordovician: Glens Falls, New York. 

 Observation. Species based on a crinoid column. 



ENCRINUS GIGANTEUS Eaton. See Arthrophycus alleghaniensis. 

 ENCRINUS TRANSVERSUS Eaton. See Phytopsis tubulosa. 



ENDOCERAS Hall. Accepted genotype : E. protciforme Hall. 



Endoceras Hall, Amer. Jour. Sci. Arts, 47, 1844, p. 109; Pal. New York, 1, 1847, 

 p. 58, p. 207 footnote. Roemer, Neues Jahrb. f. Min., etc., 1848, p. 178. Wood- 

 ward, Man. Mollusca, pt. 1, 1851, p. 89, fig. 50 on p. 90. Saemann, Palaeonto- 

 graphica, 3, 1852, pp. 147, 155, 157, 162. Pictet, Traite* de Pal., 2d-ed., 2, 

 1854, p. 641. Emmons, Amer. Geol., 1, pt. 2, 1855, pp. 148, 151. Barrande, 

 Bull. Soc. Geol. France, 2d, 12, 1855, p. 172; Neues Jahrb. f. Min., etc., 3855, 

 p. 274, pi. 3, figs. 16, 71, p. 385. Salter, Quart. Jour. Geol. Soc. London, 15, 

 1859, p. 376, fig. b. Hall, 12th Rep. New York State Cab. Nat. Hist., 1859, 

 p. 68. Hitchcock, Geol. Vermont, 1, for 1861, 1862, p. 299. Chapman, Cana- 

 dian, Jour., n. s., 8, 1863, p. 21; Expos. Min. Geol. Canada, 1864, p. 129. 

 Barrande, Syst. Sil. du Centre Boheme, 2, pt. 3, 1874, p. 773. Miller, Cincin- 

 nati Quart. Jour. Sci., 2, 1875, p. 130. Barrande, Cephalopodes, Ext. Syst. 

 Sil. du Centre Boheme, p. 103. Whitfield, Bull. Amer. Mus. Nat. Hist., 1, 

 1881, pp. 20, 23, fig. 1 ; Geol. Wisconsin, 4, 1882, p. 228. Miller, Jour. Cincinnati 

 Soc. Nat. Hist., 5, 1882, p. 85. Hyatt, Proc. Boston Soc. Nat. Hist., 22, 1883, 

 p. 266. Zittel, Handb. Pal., 2, 1884, p. 362. Holm, Palseont. Abhandl., 

 Dames and Kayser, Bd. 3, Heft 2, 1885, pp. 4, 11. Foord, Cat. Foss. Ceph. 

 British Mus., 1, 1888, p. 129. Miller, N. A. Geol. Pal., 1889, p. 436. Hyatt, 

 Amer. Geol., 16, 1895, July, p. 1. Koken, Die Leitfossilien, Leipzig, 1896,. p. 

 48, fig. 30. Holm, Geol. Foren Stockholm Forhandl., 18, 1896, p. 395; Sver- 

 igesGeol. Unders., ser. C, No. 163, 1896.. p. 3. Hyatt, Zittel-Eastman Textb. 

 Pal., 1, 1900, p. 514; 2d ed., 1913, p. 595. Ruedemann, Amer. Geol., 31, 1903, 

 p. 214; Bull. New York State Mus., 90, 1906, pp. 404, 418. Cumings, 32d 

 Ann Rep. Dep. Geol. Nat. Res., Indiana, 1908, p. 1026. Grabau and Shimer, 

 N. A. Index Fossils, 2, 1910, p. 41. 



Diploceras Conrad, Jour. Acad. Nat. Sci. Philadelphia, 8, 1847, p. 267. Whitfield, 

 Geol. Wisconsin, 4, 1882, p. 228 (Genotype: D. vanuxemi Conrad). 



C\ clendoceras Grabau and Shimer, N. A. Index Fossils, 2, 1910, p. 43. 



Colpoceras Hall, 3d Rep. New York State Cab. Nat. Hist., rev. ed., 1850, p. 181; 



doc. ed., p. 174. Barrande, Syst. Sil. du Centre Boheme, 2, pt. 3, 1874, p. 



783. Miller, N. A. Geol. Pal., 1889, p. 432 (Genotype: C. virgatum Hall). 



Observation. The generic relations of the species here referred to Endoceras 



and also to Cameroceras are in many cases still to be investigated. 



Endoceras angusticameratum Hall. 



Endoceras angusticameratum Hall, Pal. New York, 1847, p. 218, pi. 51, fig. 3. 

 Trenton: Middleville, New York. 



