TYPE SPECIMENS OF INVERTEBRATE FOSSILS. 445 



27310. Obolus (Lingulella) chuarensis Walcott. Cotypes. 



Middle Cambrian. Head of Nunkoweap and Clniar Val- 

 leys, Grand Canyon, Arizona. 



Walcott, Proc. l^ S. Nat. Mus., XXI, iSgS, p. 399. 



35294. Obelus (Lingulella) collicia Matthew. Ple.siotypes. 



Middle Cambrian. Doiigal Brook, Branch of Indian 

 River, Cape Breton, Nova Scotia. 



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



35239. Obelus (Lingulella) davisi McCoy. Ple.siotype. 



Lingnla Flag.s (Upper Cambrian). Port Madoc, North 

 Wales. 



Walcott, Proc. U. vS. Nat. Mus., XXI, iSqS, pp. 391-4, 420, pi. 27, 

 figs. 1-5. 



2731 1 Obelus ( Lingulella ) desideratus Walcott. Cotypes. 



to Upper Caml)rian and Lower Ordovician. Crowfoot vSec- 



27313. tion, Gallatin Range, Wyoming; Hamburg Mine, 

 Eureka District, Nevada. 



Walcott, Proc. IT. S. Nat. Mus., XXI, 1.S9S, j). 399. 



35207. Obelus (Lingulella) desideratus Walcott. Cotypes. 



(iallatin (Upper Cambrian). Crowfoot .section, Gallatin 

 Range, Yellow.stone National Park. 



Walcott, Mon. XXXII, Pt. II, U. vS. Geol. vSurv., 1S99, p. 445, 

 pi. 60, figs. 2, 2a. 



27314. Obelus (Lingulella) dubius Walcott. Cotypes. 



Middle Cambrian. Chisholni Mine, Ely Mountains, near 

 Pioche, Nevada. 

 Walcott, Proc. U. S. Nat. Mus., XXI, 189S, p. 401. 



35242. Obelus (Lingulella) ella Hall and Whitfield. Plesiotypes. 



35243. Middle Cambrian. P>st Canyon, Oquirrh Mountains, 



35244. Utah, near Pioche, Nevada, and near Helena, Mon- 

 tana. 



Walcott, Proc. U. S. Nat. Mus., XXI, 1S98, pp. 390, 420, pi. 28, 

 figs. 5-8. 



27315. Obelus (Lingulella) ellsi Walcott. Cotypes. 



Upper Cambrian. Chaudiere River, Quebec, Canada. 

 Walcott, Proc. U. vS. Nat. Mus., XXI, 1898, p. 402. 



27316. Obelus ( Lingulella ) euglyphus Walcott. Cotypes. 



Middle Cambrian. Head of Lava and Nunkoweap Valleys, 

 Grand Canyon, Arizona. 



Walcott, Proc. IT. S. Nat. Mus.. XXI, 1898, p. 402. 



35296. Obelus (Westenia) finlandensis Walcott. Cotypes. 



Middle Cand)rian. Aland Saltvik, Finland. 

 Walcott, Proc. U. vS. Nat. Mus., XXV, 1902, p. 611. 



