PAE) XOXe 73 
LINGULELLA DESIDERATA (Walcott)—Continued. 
Figure 5d. Ventral valve from Locality 96, Upper Cambrian limestone near Rome, Floyd County, Georgia, marked 
by unusually strong concentric striae. U.S. Nat. Mus. Cat. No. 51823a. 
5e. Dorsal valve associated with the ventral valve illustrated by figure 5d. U.S. Nat. Mus. Cat. No. 51823b. 
df and 5g. Dorsal valves from Locality 10%7a, Upper Cambrian shaly limestone near Copper Ridge, 11 miles 
northwest of Knoxville, Tennessee. U.S. Nat. Mus. Cat. Nos. 27312a and 27312b, respectively. 
5h. Large ventral valve from Locality 93, Upper Cambrian shales near Jordans on Cowan Oreek, Cherokee 
County, Alabama, referred to this species with some doubt. U.S. Nat. Mus. Cat. No. 56990b. 
5i. Broad dorsal valve from Locality 93a, Upper Cambrian shales on the Terrapin Creek road from Center to 
Amberson, Cherokee County, Alabama, that is doubtfully referred to this species, although there 
is considerable difference in the form of the shell in most localities at which it occurs. U.S. Nat. 
Mus. Cat. No. 51841a. 
5j. Form similar to that in figure 5i, from Locality 302b, Upper Cambrian limestone near Crowfoot Ridge, 
Yellowstone National Park, Wyoming. U.S. Nat. Mus. Cat. No. 2731la. Specimen figured by 
Walcott [1899, Pl. LX, fig. 3] as Dicellomus nanus. 
LInGULELLA PuNCTATA (Walcott) (p. 528). 
Ficure 6. Partly exfoliated ventral valve from Locality 58, Middle Cambrian Secret Canyon shale, Secret and New 
York canyons, Eureka district, Nevada, showing cast of part of the interior surface of the shell. U.S. 
Nat. Mus. Cat. No. 27335a. Type specimen, figured by Walcott [1884b, Pl. 1X, fig. 3] as Lingula? 
manticula. 
6a. Partly exfoliated dorsal valve associated in the same piece of limestone with the specimen represented 
by figure 6. U.S. Nat. Mus. Cat. No. 27335b. Specimen figured by Walcott [1884b, Pl. XI, fig. 2] 
as Lingula ? manticula. 
