792 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 



Megalaspis beckeri Slocom. 



Megalaspis beckeri Slocom, Field Mus. Nat. Hist., Geol. Ser., 4, 3, p. 50, pi. 14, 



fig. 5. 

 Richmond (Maquoketa): Clermont, and Postville Junction, Iowa. 



Megalaspis belemnurus White. 



Megalaspis belemnurus White, Rep. U. S. Geol. Surv. West 100th Merid., 4, War 



Dep., 1877, p. 58, pi. 3, fig. 9 (Rep. 1874, p. 11). Miller, N. A. Geol. Pal., 1889, 



p. 556, fig. 1030. 



Upper Pogonip: Queen Spring Hill, Schell Creek Range, Nevada. 

 Holotype.Cat. No. 8562, U.S.N.M. 



Megalaspis? boliviensis (D'Orbigny). 



Asaphus boliviensis D'Orbigny, Voyage I'Amerique Merid., 3, pt. 4, 1817, p. 32, 



Atlas, pi. 1, figs. 8, 9. 

 Silurian: Rio Grande, Province de Vallegrande; Tacopaya and Cochabamba, 



Bolivia. 



Megalaspis brackenbuschi Kayser. 



Megalaspis Brackenbuschi Kayser, Zeit. d. deutsch. geol. Gesell, 50, 1898, p. 428, 



pi. 16, fig. 3. 

 Ordovician: Salta, Argentina. 



Megalaspis goniocercus (Meek). 



Asaphus (Megalaspis) goniocercus Meek, 6th Ann. Rep. U. S. Geol. Surv., Terr., 



1873, p. 480. 



Lower Ordovician: Near Malade City, Utah. 

 Holotype.C&t. No. 11600, U.S.N.M. 



Megalaspis goniurus (Billings). 



Asaphus goniurus Billings, Canadian Nat. Geol., 5, 1860, p. 324; Pal. FOBS., 1, 



Geol. Surv. Canada, 1865, p. 415. 

 Megalaspis goniurus Raymond, Trans, and Proc. Roy. Soc. Canada, 3d ser., 5, sec. 



4, 1912, p. 119, pi. 2, fig. 6. 

 Ozarkian? (Levis-erratics): Point Levis, Quebec. 



Megalaspis? matacensis Hoek. 



Megalaspis matacensis Hoek, Neues Jahrb. Min., Geol., Pal., 34, 1912, p. 233, pi. 



11, figs. 6, 7. 

 Ordovician: Near Mataca, Bolivia. 



MEGALOGRAPTUS Miller. Genotype: M. welchi Miller. 



Megalograptus Miller, Cincinnati Quart. Jour. Sci., 1, 1874, pp. 343. James, Jour. 



Cincinnati Soc. Nat. Hist., 14, pt. 2, 1892, p. 160. Miller, N. A. Geol. Pal., 



1889, p. 195. Rued emann, Mem. New York State Mus., 11, pt. 2, 1908, p. 



247. Clarke and Ruedemann, Mem. New York State Mus., 14, 1912, p. 324. 



Megalograptus welchi Miller. 



Megalograptus welchi Miller, Cincinnati Quart. Jour. Sci., 1, 1874, pp. 343-346, 

 figs. 35-37; N. A. Geol. Pal., 1889, p. 195, figs. 189, 190, 191. James, "Jour. 

 Cincinnati Soc. Nat. Hist., 14, pt. 2, 1892, p. 161. Foerste in Clarke and 

 Ruedemann, Mem. New York State Mus., 14, 1912, p. 325, pi. 58, figs. 3-5. 



Richmond (Liberty): Near Clarksville, Ohio. 



MEGALOMPHALA Ulrich. Genotype: Bellerophon contortus Eichwald. 



Megalomphala Ulrich, Geol. Minnesota, 3, pt. 2, 1897, p. 850. Koken, Neues 

 Jahrb. Min., Geol. Pal., 1898, 1, 1898, p. 9. 



