468 CAMBRIAN BRACHIOPODA. 



are of the same character as those of Oiolus ( Westonia) jinlandensis Walcott (PI. XL VIII) and 

 0. ( W.) hottnicus. 



It is not improbable that with the discovery of a large series of specimens the three species 

 may be combined, or 0. ( TF.) hottnicus and 0. ( W.) wimani placed as varieties of 0. ( W.) 

 Jinlandensis. 



For reference to the geological horizon of bowlders on Eggegrund Island, similar to the 

 ones containing this species, see description of 0. ( W.) hottnicus, page 454. 



The specific name is given for Dr. Carl Wiman, of the University of Upsala. 



Formation and locality. — Middle? Cambrian: (311c, 311g, and 311i)o Drift bowlders of bituminous sandstone, Nos. 

 7, 16, and 27 [ Wiman, 1902, p. 57], on Biludden, about 20 miles {32.2 km.) east ofGefle, Province of Gefleborg, Sweden. 



(311t) Drift bowlder of mottled calcareous sandstone [Wiman, 1902, p. 57], at Ofverby, parish of Jomala, Aland 

 Island, Finland, Russia. 



Obolxjs (Westonia) sp. undt. a. 



Fragments of a species of Obolus with a very minutely reticulated surface occur in associa- 

 tion with Cyrtoceras camhria Walcott and suggest Oholus ( ^Yestonia) ella, except that the surface 

 ornamentation is so minute that it can only be seen with a strong lens. The fragments indicate 

 a shell about the size of 0. ( TF.) ella. 



Formation and locality. — ^tipper Cambrian: (C56) Lower part of Cliaumitien limestone, 25 feet below the top 

 of Pagoda Hill [Blackwelder, 1907a, p. 42 (part of last list of fossils)], 1 mile (1.6 km.) west of Tsinan, Shantung, 

 China. 



Obolus (Westonia) sp. undt. b. 



Fragments of a shell showing the characteristic surface ornamentation of Westonia occur 

 in the Ordovician limestone, Eureka district, Nevada. The shell must have been at least 

 as large as Oholus ( Westonia) stoneanus (Wliitfield) , but the material is too imperfect for 

 identification. 



Formation and locality. — Passage beds between the Upper Cambrian and the Ordovician: (205) siliceous 

 limestone on Roundtop Mountain, Eureka district [Hague, 1892, Atlas], Eureka County, Nevada. 



Genus LINGULELLA Salter. 



[Lingula.] 



Tellinomya McCoy [not Hall], 1854, British Paleozoic Fossils, p. 274. (Described from distorted specimens of Lin- 



gulella davisi (McCoy).) 

 Lingulella Salter, 1866, Mem. Geol. Survey Great Britain, vol. 3, p. 333. (Described and disCussed as a new genus.) 



"The name Lingulella was first introduced about 1861, with the late Dr. S. P. Woodward's full consent; and 



the name appears at page 9 of Sir Roderick Murchison's address to the geological section of the British Asso- 

 ciation, Manchester, 1861," but was not described (see Davidson, 1866, p. 55). 

 Lingulella Salter, Davidson, 1866, British Fossil Brachiopoda, vol. 8, pt. 7, No. 1, p. 55. (Original description copied 



and Lingulella discussed as either a genus or subgenus.) 

 Lingulella Salter, Davidson, 1868, Geol. Mag., vol. 5, p. 304. (Genus discussed.) 



Lingulella Salter, Dall, 1870, Am. Jour. Conchology, 2d ser., vol. 6, pt. 2, pp. 153 and 159. (Described.) 

 Lingulella Salter, Meek, 1871, Proc. Acad. Nat. Sci. Philadelphia for 1871, vol. 23, pp. 186-187. (Notes on genus in 



discussion of "Lingulella lamborni.") 

 Lingulella Salter, Dall, 1877, Bull. U. S. Nat. Mus. No. 8, p. 44. (Mentioned.) 



Lingulella Salter, Zittel, 1880, Handbuch der Palseontologie, Bd. 1, Abth. 1, pp. 663-664. (Described in German.) 

 Lingulella Salter, Salter and Etheridge, 1881, Mem. Geol. Survey Great Britain, vol. 3, 2d ed., p. 537. (Copy of 



Salter, 1866b, p. 333.) 

 Lingula {Lingulella) Salter, Oehlert, 1887, Manuel de conchyliologie, by Fischer, p. 1261. (Described in French.) 

 Lingulella Salter, Bornemann, 1891, Nova Acta Acad. Cses. Leop. Carol. Germanicse Naturae Curiosorum, Bd. 56, 



No. 3, pp. 435^37. (Discussed in German.) 

 Lingulella Salter, Hall and Clarke (in part), 1892, Eleventh Ann. Rept. State Geologist New York for 1891, pp. 232-233. 



(Described. Lingulella davisi is given as the type, but as a generic illustration Botsfardia cselata is figured on 



PI. III.) 

 Lingulella Salter, Hall and Clarke (in part), 1892, Forty-fifth Ann. Rept. New York State Museum for 1891, pp. 



548-549. (Copy of preceding reference.) 



o 311c is the type locality. 



