444 BULLETIN 53, UNITED STATES NATIONAL MUSEUM. 



27302. Obolus anceps Walcott. Cotypes. 



Lower Pogonip (Cambrian). Adams Hill, Eureka Dis- 

 trict, Nevada. 

 Walcott, Proc. U. vS. Nat. Mus., XXI, 1898, p. 388. 



35238. Obolus apollinis Eichwald. Plesiotypes. 



Upper Cambrian. Near Reval, Ru.s.sia. 



Walcott, Proc. U. S. Nat. Mus., XXI, 1898, pp. 385, 391, 420, 

 pi. 26, figs. 3-6. 



27305. Obolus (Lingulella) argutus Walcott. Cot3^pes. 



Upper (?) Cambrian. Schellboiirne, Schell Creek Range, 

 Nevada. 

 Walcott, Proc. U. S. Nat. Mus., XXI, 1898, p. 396. 



35293. Obolus (Lingulella) atavus Matthew. Plesiotypes. 



Middle Cambrian. Dougal Brook, branch of Indian 

 River, Cape Breton, Nova Scotia. 

 Walcott, Proc. U. vS. Nat. Mus., XXV, 1902, p. 609. 



27306. Obolus (Lingulella) auga Walcott. Cotypes. 



Middle Cambrian. vShooks Gap in Bays Mountain, ten 

 miles east of Knoxville, Tennessee. 

 Walcott, Proc. U. S. Nat. Mus., XXI, 1898, p. 396. 



27309. Obolus (Lingulella) bellulus Walcott. Cotj-pes. 



Upper Cambrian. Little Bell Lsland, Conception Bay, 



Newfo midland. 

 Walcott, Proc. U. vS. Nat. Mus., XXI, 1898, p. 398. 



27307. Obolus (Lingulella) bellus Walcott. Cotypes. 



27308. Upper Cambrian. Little Bell and Great Bell i.slands. Con- 



ception Bay, Newfoundland. 

 Walcott, Proc. U. S. Nat. Mus., XXI, 1898, p. 397. 



Obolus (Lingulella) bellus Walcott, i9oi=0bolus (Lingulella) 

 lens Matthew. 



35259. Obolus (Lingulella?) bicensis Walcott. Holotype. 



Lower Cambrian. Bic Harbor, Province of Quebec, 

 Canada. 

 Walcott, Proc. U. vS. Nat. Mus., XXIII, 1901, p. 688. 



35295. Obolus (Lingulella) canius Walcott. Cotypes. 



Middle Cambrian. McLeans Brook, near Marian Bridge, 

 Cape Breton, Nova Scotia. 

 Walcott, Proc. U. .S. Nat. Mus., XXV, 1902, p. 610. 



35237. Obolus (Lingulella ) celatus Volborth. Plesiotypes. 



Upper Caml^rian. Jegelecht, near Reval, Russia. 



Walcott, Proc. U. S. Nat. Mus., XXI, 1S98, p. 385, 420, pi. 26, 

 figs. 1, 2. 



