INDEX 503 



Dikelocephaliis — Continued. page 



? dalyi Walcott, associated with Tsinania elongata 228 



cf . D. minnesotensis Owen, listed 409 



latifrons Shumard, in synonymy 198 



f iowensis Owen, discussed 202 



genotype of Crepicephalus 201 



in synonymy 207 



dirce, see Dolichometopus. 

 dis, see Crepicephalus. 



Discinella sp., listed 322 



Discinopsis sulcatus (Walcott) (= Craniella f f), generic references 15 



listed, Ch'ang-hia 68 



stratigraphic and geographic position 45 



Distribution, stratigraphic and geographic, Cambrian species 44 



divi, see Agraulos and Inouyia. 



Dolichometopinae, subfamily named 330 



characterized 309 



typical genera, Bathyuriscus and Dolichometopus 309 



Dolichometopus Angelin, genus described 355 



absence, Ku-shan 66 



Asiatic species 359 



Bathyuriscus as a subgenus of (synonymy) 330 



characterized 309, 357 



compared with Bathyuriscus 333, 358, 362 



Bathyuriscus (synonymy) 372 



Corynexochus 309, 311 



Housia 374 



distinguished from Bathyuriscus 357 



genotype, Dolichometopus suecicus Angelin 357 



Greek derivation, synonymy 355 



guide fossil for uppermost Middle Cambrian, Sweden 358 



identical with Bathyuriscus 358 



may have developed from Corynexochus 308 



observations 357 



related to Bathyuriscus 333 



species characterized 356 



listed 359 



referred elsewhere 359 



stratigraphic range and geographic distribution 357 



synonymy 355 



acadicus Matthew, described 360 



figured, pi. S3, figs, i, la-c 428 



compared with Anomocare 360 



Bathyuriscus asiaticus 358 



synonymy 360 



Dolichometopus suecicus 360 



sculpture 360 



stratigraphic range and geographic distribution 357 



surface 357 



