62 CAMBRIAN BRACHIOPODA. 



Present reference. 



(Lingulella) zetus [Obolus], Walcott [1898b, p. 419] Obolus zetus. 



Lingulella zeus Walcott [new] Lingulella zeus. 



Lingulella sp. Kayser [1883, p. 35] Obolus? sp. undt. f. 



Kayser [1883, pp. 35-36] Lingulella davisi. 



Lingulella sp. [Lingula or], Linnarsson [1876, pp. 15-16] Doubtfully referred to Lingulella ferruginea. 



Lingulella sp. undt. Linnarsson [1879, p. 25] Lingulella ferruginea. 



Lingulella (?) sp. Pompeckj [1896b, p. 509] Lingulella cf. ferruginea. 



Lingulella? sp. No. 1 Wiman [1902, p. 52] Obolus (Westonia) wimani. 



Lingulella? sp. No. 2 Wiman [1902, p. 52] Do. 



Lingulella? sp. No. 3 Wiman [1902, p. 52] Obolus (Westonia) alandensis. 



Lingulella? sp. No. 4 Wiman [1902, p. 52] Obolus (Westonia) balticus. 



Lingulella? sp. No. 5 Wiman [1902, p. 52] Obolus (Westonia) alandensis. 



Lingulella? sp. No. 6 Wiman [1902, p. 52] Obolus (Westonia) balticus. 



Lingulella? sp. No. 7 Wiman [1902, p. 52] Obolus (Westonia) wimani. 



Lingulella (Acrothyra?) inflata Matthew [1902b, p. 390] Acrotreta inflata. 



Lingulella (Lingulepis) Walcott [1908e, PL XI and pp. 142 and 144] Lingulella (Lingulepis). 



Lingulella (Lingulepis) acuminata sequens Walcott [1908d, p. 72] Lingulella (Lingulepis) acuminata sequens. 



Lingulella (Westonia) ella Grabau and Shimer [1907, p. 193] Obolus (Westonia) ella. 



Lingulepis Dall [1870, pp. 154 and 161] Lingulella (Lingulepis). 



Grabau and Shimer [1907, p. 193] Do. 



Hall [1863, p. 129] Do. 



Hall [1867, p. 106] Do. 



Hall and Clarke [1892a, pp. 231-232] Do. 



Hall and Clarke [1892b, pp. 547-548] Do. 



Hall and Clarke [1892c, pp . 59-62, and 164] Do. 



Matthew [1902c, p. 102] Do. 



Matthew [1903, p. 126] Do. 



Meek [1871, pp. 186-187] Do. 



Meek and Hayden [1865, pp. 1 and 2] Do. 



Schuchert [1897, p. 258] Do. 



Walcott [1897a, p. 404] Do. 



Zittel [1880, p. 664] Do. 



(Lingulepis) [Lingula], Oehlert [1887, p. 1261] Do. 



(Lingulepis) [Lingulella], Walcott [1908e, PI. XI, and pp. 142 and 144]... . Do. 



(Lingulepis) [Obolus], Walcott [1899, pp. 443^44] Do. 



Walcott [1901, p. 683] : Do. 



Lingulepis acuminata Dwight [1886, p. 208] Lingulella (Lingulepis) acuminata. 



Matthew [1895b, pp. 257-258] Do. 



Schuchert [1897, p. 259] Do. 



Walcott [1897a, p. 404] Do. 



Lingulepis acuminata meeki Delgado [1904, pp. 366-367] Lingulella delgadoi. 



(Lingulepis) acuminata sequens [Lingulella], Walcott [1908d, p. 72] Lingulella (Lingulepis) acuminata se- 

 quens. 



(Lingulepis) acuminatus [Obolus], Walcott [1899, p. 443] Lingulella (Lingulepis) acuminata. 



(Lingulepis) acuminatus meeki [Obolus], Walcott [1899, p. 444] Lingulella (Lingulepis) acuminata meeki. 



Lingulepis acutangulus Schuchert [1897, p. 259] Lingulella acutangula. 



Lingulepis affinis Walcott [1889a, p. 381] Obolus (Lingulobolus) affinis. 



Lingulepis cuneolus Schuchert [1897, p. 259] Lingulella perattenuata (in part). 



Whitfield [1877, pp. 8-9] Lingulella cuneola. 



A^Tiitfield [1880, p. 336] Do. > 



Lingulepis ella Hall and \Vhitfield [1877, p. 232] Obolus (Westonia) ella. 



Walcott [1897a, p. 404] Do. 



(Lingulepis) eros [Obolus], Walcott [1905a, p. 333] Lingulella (Lingulepis) eros. 



Lingulepis gregwa Matthew [1903, pp. 56-57, and 126-131] Lingulella (Lingulepis) gregwa. 



(Lingulepis) gregwa [Obolus], Walcott [1901, pp. 692-694] Lingulella atava (in part), L. tumida (in 



part), L. cania (in part), L. (Lingulepis) 

 gregwa (in part), and L. (L.) exigua. 



Lingulepis gregwa robusta Matthew [1903, pp. 57 and 131] Lingulella (Lingulepis) gregwa robusta. 



Lingulepis longinervis Matthew [1903, pp. 133-135] Lingulella (Lingulepis) longinervis. 



Lingulepis lusitanica Delgado [1904, pp. 365-366] Delgadella lusitanica. 



Lingulepis msera Hall and Whitfield [1877, p. 206] Obolus maera. 



Walcott [1884b, pp. 12-13] Do. 



Lingulepis matinalis Hall [1863, p. 130] Obolus matinalis. 



Hall [1867, p. 107] Do. 



