330 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 64 



the Intercolonial Railway, 2 miles (3.2 km.) west of Bic Railway 

 station, both in Rimouski County, Quebec, all in Canada. 



Subfamily Dolichometopin^ 

 Genus BATHYURISCUS Meek 



Bathyuriscus Meek, 1873, Sixth Ann. Rept. U. S. Geol. Surv., Terr., p. 484. 



(Suggests name for species haydeni if the latter belongs to a new 



genus.) 

 Bathyuriscus W.^lcott, 1866, Bull. U. S. Geol. Surv., No. 30, p. 215. (De- 

 scribes and discusses genus with illustration of new species, B. hozvclli.) 

 Bathyuriscus Matthew, 1897, Trans. Royal Soc. Canada, 2d ser., Vol 3, 



Sec. 4, p. 195. (Considers Bathyuriscus a subgenus of DoUchometopus 



Angelin.) 

 Bathyuriscus Matthew, 1899, Trans. Royal Soc. Canada, 2d ser., Vol. 5, 



Sec. 4, p. Gz- (Suggests that Bathyuriscus may have been derived from 



Anomocare.) 

 Bathyuriscus Lorenz, 1906, Zeits. deuts. geol. Gesells., Vol. 58, pp. 74, 75. 



(Decides that Bathyuriscus is a subgenus of DoUchometopus.) 

 Bornemannia Walcott, 1908, Smithsonian Misc. Coll., Vol. 53, pp. 213, 214. 



(Name given in lists of fossils from ic and 3 of geologic section.) 

 Bathyuriscus Grabau and Shimer, 1910, North American Index Fossils, 



Vol. 2, p. 287. (Brief description of genus and illustration of B. pro- 



ductus, B. hoivelli, and B. rotundatus.) 



Since the publication of my note on Bathyuriscus in 1886' con- 

 siderable additional material has been found that adds to our knowl- 

 edge of the genus and the species grouped under it. 



Description. — General form elongate oval. Axial and pleural lobes 

 strongly defined. Cephalon transversely semi-circular with genal 

 angles extended backward in spines of medium length. Marginal 

 border narrow in front, widening towards the genal angles where 

 it merges into the genal spines ; posterior margin and occipital ring- 

 usually defined by a well-marked furrow. The facial sutures cut the 

 anterior margin a short distance each side of the line of the greatest 

 expansion of the glabella and curve obliquely inward to the anterior 

 base of the eye lobes ; encircling the latter, they continue obliquely 

 outward and cut the posterior margin a short distance inside the base 

 of the genal spine. Glabella elongate, usually expanded towards the 

 broadly rounded front and narrowing slightly midway; marked by 

 three or four pairs of short lateral furrows, the posterior two pairs 

 of which are extended obliquely inward and backward, and the 

 anterior more or less obliquely forward. Occipital segment well- 

 defined and in some species rising at the center to form a base for 



Bull. U. S. Geol. Survey, No. 30, pp. 215-216. 



