362 BULLETIN 53, UNITED STATES NATIONAL MUSEUM. 



1 532 1. Lingulepis ella Hall and Whitfield. Holotype. 



Middle Cambrian. Canyon above Calls Fort, Wahsatch 

 Range, Utah. 



Hall and Whitfield, Rept. U. S. Geol. Expl. 40th Par., IV, Pt. II, 

 1877, p. 232, pi. 1, fig. 8. 



=Lingulella ella. 



24552. Lingulepis maera Hall and Whitfield. Cotypes. 



Upper Cambrian. Eureka District, Nevada. 



Hall and Whitfield, Rept. U. S. Geol. Expl. 40th Par., IV, Pt. II, 

 1877, p. 206, pi. 1, figs. 5-7. 



24553. Lingulepis ? minuta Hall and Whitfield. Cotypes. 



Upper Cambrian. Eureka District, Nevada. 



Hall and Whitfield, Rept. U. S. Geol. Expl. 40th Par., IV, Pt. II, 

 1877, p. 206, pi. r, figs. 3, 4. 



= Linnarssonella minuta. 



24589. Lingulepis perattenuatus Whitfield. Cotypes. 



Upper Cambrian. Red Canyon Creek, Black Hills, South 

 Dakota. 



Whitfield, Rept. Geol. and Resources Black Hills Dakota, 1880, 

 P- 337, pl- 2, figs. 7-9. 



17860. Lingulepis pinnaformis (Owen). Plesiotypes. 



Middle Cambrian. Falls of St. Croix, Wisconsin. 



Owen, Rept. Geol. Surv. Wis., Iowa, and Minn., 1852, pl. 1 B, 

 fig. 2 (figured as Lingula antiqua and L. prima). 



24588. Lingulepis pinnaformis (Owen). Plesiotypes. 



Upper Cambrian. Headwaters of Red Canyon Creek, 

 Black Hills, South Dakota. 



Whitfield, Rept. Geol. and Resources Black Hills Dakota, 1880, 

 p. 335, pl. 2, figs. 1-4. 



1026. Lingulepis pinniformis (Owen). Holotype and paratypes. 



Upper Cambrian. Central part of Black Hills, South 

 Dakota. 



Meek andHayden, Pal. Upper Mo., Smithsonian Cont. to Knowl., 

 No. 172, XIV, 1864, pp. 2, 3, pl. 1, figs. i-ib. — Whitfield, 

 Rept. Geol. and Resources Black Hills Dakota, 1S80, p. 337, 

 pl. 2, figs. 10, 11 (as L. dakotensis). 



See Lingula antiqua, L. prima, and L- pinnaformis. 



1027. Lingulepis prima (Conrad). Plesiotypes. 



Upper Cambrian. Central part of Black Hills, South 

 Dakota. 



Meek and Hay den, Pal. Upper Mo., Smithsonian Cont. to Knowl., 

 No. 172, XIV, 1864, p. 3, pl. 1, figs. 2-2b. 



• =Obolella polita. 



45197. Lingulops granti Hall and Clarke. Plastotype. 



Niagaran (Sil.). Hamilton, Ontario, Canada. 



Hall and Clarke, Nat. Hist. New York, Pal. VIII, Pt. I, 1892, pp. 



!9- 173- pl- 4 k. figs- 14- 15- 



