NO. 5 CAMBRIAN TRILOBITES 43 1 



Dolicliometopus (f) dcois Walcott — Continued. page 



iw- (X 3-) Thoracic segment, associated with the specimen rep- 

 resented by fig. le. (C57.) U. S. National Museum, Cata- 

 logue No. 58247. [See Walcott, Cambrian Faunas of China, 

 pi. 22, fig. ig.] 

 2. (X I-5-) Photograph of one of the fragments of limestone 

 collected by Dr. Th. Lorenz at Wang-tschuang, Shan-tung, 

 China. The pygidia were referred to Bathyuriscus asiaticus 

 Lorenz, by Lorenz, and the cranidia on the other side of the 

 same piece of shaly limestone to the same species. (See fig. 

 irf above.) Plastotype. U. S. National Museum, Catalogue 

 No. 58538. [See Lorenz, Zeits. deuts. geol. Gesells., Vol. 58, 

 1906, pi. 5, figs. 1-5. Also Walcott, Cambrian Faunas of 

 China, pi. 22, fig. 2.] 



Dolichomctopus ( ?) alccste Walcott 361 



Figs. 3, 3'. (X 2.) Type specimen showing parts of cranidium in front 

 of occipital furrow ; with side outline of same. From local- 

 ity C 4, Middle Cambrian: Kiu-lung group, south of Yen- 

 chuang, Shan-tung. China. U. S. National Museum, Cata- 

 logue No. 58249. [See Walcott, Cambrian Faunas of China, 

 pi. 22, figs. 3, 3'.] 



2,a. (Natural size.) Free cheek associated with this species at lo- 

 cality C 4. U. S. National Museum. Catalogue No. 58250. 

 [See Walcott, Cambrian Faunas of China, pi. 22, fig. 3a.] 



2b, 3b'. (X I-5-) Pygidium associated with this species a little 

 lower in the section (C i). U. S. National Museum, Cata- 

 logue No. 58251. [See Walcott, Cambrian Faunas of China, 

 pi. 22, figs. 2b, 3b'.] 



Dolichometopus (?) derceto Walcott 367 



Figs. 4, 4'. (X 3.) Type specimen showing portions of the cranidium; 

 and side outline of same. From locality C i, Middle Cam- 

 brian : Kiu-lung group, south of Yen-chuang, Shan-tung, 

 China. U. S. National Museum, Catalogue No. 58252. [See 

 Walcott, Cambrian Faunas of China, pi. 22, figs. 4, 4'.] 

 4a, 4a'. (X 3-) Fragment of a pygidium (and side outline) from 

 locality C 2, just above the locality of specimen represented 

 by fig. 4. U. S. National Museum, Catalogue No. 58253. 

 [See Walcott, Cambrian Faunas of China, pi. 22, figs. 4a, 

 4a'-] 



Dolichometopus ( f ) dircc Walcott 368 



Figs. 5, 5'. (X 2.) Type specimen, showing central parts of crani- 

 dium ; and side outline of same. From locality C 24, Mid- 

 dle Cambrian : Ch'ang-hia formation, east of Ch'ang-hia, 

 Shan-tung, China. U. S. National Museum, Catalogue No. 

 58254. [See Walcott, Cambrian Faunas of China, pi. 22, 

 figs. 5. 5'-] 



5a. (Natural size.) Large free cheek associated with specimen 

 represented by fig. 5. U. S. National Museum, Catalogue 

 No. 58255. [See Walcott, Cambrian Faunas of China, pi. 

 22, fig. 5a.] 



Sb, 56'. (X4.) Small pygidium associated with specimen repre- 

 sented by fig. 5. U. S. National Museum, Catalogue No. 

 58256. [See Walcott, Cambrian Faunas of China, pi. 22, 

 %. Sb.] 



