444 BULLETIN" 53, UNITED STATES NATIONAL MUSEUM. 



27302. Obolus anceps Walcott. Cotypes. 



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

 trict, Nevada. 

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



35238. Obolus apollinis Eichwald. Plesiotypes. 



Upper Cambrian. Near.Reval, Russia. 



Walcott, Proc. U. S. Nat. Mus., XXI, 189S, pp. 385, 391, 420, 

 pi. 26, figs. 3-6. 



27305. Obolus (Lingulella) argutus Walcott. Cotypes. 



Upper (?) Cambrian. Schellbourne, 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. S. Nat. Mus., XXV, 1902, p. 609. 



27306. Obolus (Lingulella) auga Walcott. Cotypes. 



Middle Cambrian. Shooks 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. Cotypes. 



Upper Cambrian. Little Bell Island, Conception Bay, 

 Newfoundland. 

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



27307. Obolus (Lingulella) bellus Walcott. Cotypes. 



27308. Upper Cambrian. Little Bell and Great Bell islands, Con- 



ception Bay, Newfoundland. 



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



Obolus (Lingulella) bellus Walcott, i90i=Obolus (Lingulella) 

 lens Matthew. 



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



Lower Cambrian. Bic Harbor, Province of Quebec, 

 Canada. 

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



35295. Obolus 1 Lingulella ) canius Walcott. Cotypes. 



Middle Cambrian. McLeans Brook, near Marian Bridge, 

 Cape Breton, Nova Scotia. 

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



35237. Obolus 1 Lingulella) celatus Yolborth. Plesiotypes. 



Upper Cambrian. Jegelecht, near Reval, Russia. 



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

 figs. 1, 2. 



