470 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 



EcHiNOCYSTiTES Hall. See Lysocystitea Miller. 



EcHiNOENCRiNiTES ANATiFORMis Hall. See ChirocrinuB anatiformis, 



EcHiNOENCRiNiTES FENESTRATUS Troost. See Tetracystis fenestratus. 



ECHINOGNATHUS Walcott. Genotype: Eurypterus? Cleveland! Walcott. 



Echinognathus Walcott, Amer. Jour. Sci., 3dser., 23, 1882, p. 213.— Zittel, Handb. 

 Pal., 2, 1885, p. 651.— Miller, N. A. Geol. Pal., 1889, p. 546.— Vogdes, Annals 

 New York Acad. Sci., 5, 1889, p. 18.— Clarke, Zittel-Eastman Textb. Pal., 1, 

 1900, p. 676; 2d ed., 1913, p. 783.— Clarke and Ruedemann, Mem. New York 

 State Mus., 14, 1912, p. 321. 

 Echinorhynchua (in error for Echinognathus) Martin, Trans. New York Acad. 

 Sci., 2, 1882, p. 8. 



Echinognathus clevelandl (Walcott). 



Eurypterus? clevelandi Walcott, Amer. Jour. Sci., 3d ser., 23, 1882, p. 153, 



figs. 1, 2. 

 Eurypterus (Echinognathus) clevelandi Lamie, Trans. Royal Soc. Edinburgh, 



39, 1899, p. 587. 

 Echinognathus clevelandi Walcott, Amer. Jour. Sci., 3d ser., 23, 1882, p. 213, 



figs. 1, 2. — Clarke and Ruedemann, Mem. New York State Mus., 14, 1912, p. 



322, pi. 58, figs. 1, 2. 

 Utica: Holland Patent, Oneida County, New York. 

 Cotypes.—C&t. No. 26785, U.S.N.M. 



EcHiNOEHYNCHUS Martin. See Echinognathus Walcott. 



EcHiNosPHiERA Angolin. See Echinosphserites Eichwald. 



ECHINOSPH^RITES Wahlanberg. Genotype: Echinus aurantium Gyllenhal. 



Echinospheerites Wahlenberg, Acta Soc. Sci. Upsala, 8, 1821, p. 52. — Eichwald, 

 Zool. Specialis, pt. 1, Vilnae, 1829, p. 231. — MuUer, Ann. Mag. Nat. Hist., 

 2d ser., 13, 1854, p. 248. — Chapman, Canadian Jour., new ser., 2, 1857, p. 

 303.— Pictet, Traite de Pal., 2d ed., 4, 1857, p. 302.— Hall, Pal. New York, 3, 

 for 1859, 1861, p. 150.— Zittel, Handb. Pal., 1, 1879, p. 417.— Barrande and 

 Waagen, Syst. Sil. Centre Boheme, 7, pt. 1, 1887, p. 150, pis. 16, 21-25, 39.— 

 Jaekel, Stammes. Pelmat., 1, Thecoideau. Cyst., Berlin, 1899, p. 331. — Zittel- 

 Eastman Textb. Pal., 1, 1900, p. 183. 



Echinosphsera Angelin, Icon. Criuiod., 1878, p. 28. — Haeckel, Amph. Cyst. 

 Leipzig, 1896, p. 66, pi. 1, figs. 3-3E.— Bather, Treatise on Zool., pt. 3, Echin- 

 oderma, London, 1900, p. 53, figs. 14, 15. — Springer, Zittel-Eastman Textb. 

 Pal., 2d ed., 1913, p. 152. 



Echlnosphffirltes aurantium (Gyllenhal). 



Echinus aurantium Gyllenhal, Kong. Vet. Akad. Hand., 33, 1772, p. 245, pi. 8, 



figs. 4, 5; pi. 9, figs. 6-9.— Wahlenberg, Jour, de Physique, 91, 1820, p. 188. 

 Echinosphserites aurantium Wahlenberg, Acta Soc. Sci. Upsala, 8, 1821, p. 52. — 



Bassler, Bull. Virginia Geol. Surv., 2a, 1909, pi. 3, fig. 19; pi. 21, figa. 6-8. 

 Sphseronites aui'antium Hisinger, Anteckninger, 4, 1828, pp. 195, 198. 

 Echinosphsera aurantium Angelin, Iconog. Crin. Soc, 1878, p. 28, pi. 14, figs. 1-21. 

 Cryetallocyatis aurantium Haeckel, Die Amph. und Cyst., 1896, p. 66, pi. 1, figa. 



3-3e. 

 Middle Ordovician: Esthonia, Russia; Pennsylvania, Maryland, and Virginia 



(Chambersburg); Virginia and Tennessee (Ottosee); Tennessee (Carters); 



Missouri, etc. (Kimmswick). 

 Plesioty pes. —C&t. No. 56631, U.S.N.M. 



