334 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 64 



Species of Bathyuriscus. — The species now referred to Bathyu- 

 riscus are : 



Bathyuriscus adceus Walcott (pi. 47, fig. 3), Middle Cambrian. 

 Bathyuriscus anax Walcott (pi. 48, fig. i), Middle Cambrian. 

 Bathyuriscus atossa Walcott (pi. 48, fig. 2), Middle Cambrian. 

 Bathyuriscus bantius Walcott (pi. 49, fig- 2), Middle Cambrian. - - 

 Bathyuriscus batis Walcott (pi. 48, fig. 4), Lower Cambrian. 

 Bathyuriscus belesis Walcott (pi. 50, fig. i), Lower ? Cambrian. 

 Bathyuriscus belus Walcott (pi. 50, fig. 2), Lower ? Cambrian. 

 Bathyuriscus ? bithus Walcott (pi. 47, fig. 4), Middle Cambrian. 

 Bathyuriscus haydeni (Meek) (pi. 46, fig. 2), Middle Cambrian. 

 Bathyuriscus howelli Walcott (pi. 47, fig. i), Middle Cambrian. 

 Bathyuriscus manchtiriensis Walcott (pi. 49, fig. 4), Middle Cambrian. 

 Bathyuriscus ornatus Walcott (pi. 46, fig. 4), Middle Cambrian. 

 Bathyuriscus rotundatus (Rominger) (pi. 47, fig. 2), Middle Cambrian. 

 Bathyuriscus stoliczkai Reed, Middle ? Cambrian. 

 Bathyuriscus sp. undt. (i) (pi. 49, fig. 3), Middle Cambrian. 

 Bathyuriscus ? sp. undt. (2) (pi. 65, fig. 5), Middle Cambrian. 

 Bathyuriscus (Poliella) anteros Walcott (pi. 46, fig. 5), Middle Cambrian. 

 Bathyuriscus (Poliella) balus Walcott (pi. 49, fig. i), Middle Cambrian. 

 Bathyuriscus (Poliella} caranus Walcott (pi. 46, fig. 8), Middle Cambrian. 

 Bathyuriscus (Poliella) occidentalis (Matthew) (pi. 46, fig. 3), Middle 



Cambrian. 

 Bathyuriscus (Poliella) powersi Walcott (pi. 46, fig. i), Middle Cambrian. 

 Bathyuriscus (Poliella) primus Walcott (pi. 46, fig. 6), Lower Cambrian. 

 Bathyuriscus (Poliella) probus Walcott (pi. 65, fig. 2), Middle Cambrian. 

 Bathyuriscus (Poliella) sylla Walcott (pi. 48, fig. 3), Middle Cambrian. 

 Bathyuriscus (Poliella) sp. undt. (i) (pi. 46, fig. 7), Lower Cambrian. 



Generic reference of species heretofore placed under Bathyuriscus 

 and nozv referred to other genera is as folloivs: 



Bathyuriscus asiaticus horenz = Dolichofnetopus. 

 Bathyuriscus (Kootenia) dawsoni Walcott^ Kootenia. 

 Bathyuriscus productus (Hall and Whitfield) = DoHchometopus. 

 Bathyuriscus pupa Matthew ^= Bathyuriscus occidentalis Matthew. 

 Bathyuriscus senectus Matthew (1897) =:.Corynexochus. 

 Bathyuriscus sp. undt. (from China) Walcott =■ DoHchometopus. 

 Bathyuriscus sp. undt. Walcott (1899) =Anomocare ? 



BATHYURISCUS AD^US, new species 



Plate 47, figs. 3, za-c 

 This species is closely related to Bathyuriscus rotundatus. It 

 differs: (a) in having a broader space between the front of the 

 glabella and the anterior edge of the cranidium; (b) in having the 

 outer angle of the thoracic pleura (genal angle) less rounded and the 

 triangular tubercle at the inner end of the pleural furrow somewhat 



