454 TERTIARY INSECTS OF NORTH AMERICA. 



1. TELEOSCHISTUS gen. nov. (re'Aeo?, 



Head of moderate size, nearly half as broad as the thorax, and dis- 

 tinctly broader than long, scarcely longer than the intraocular width, the 

 portion in front of the eyes subquadrate, with broadly rounded front, 

 rounded angles, the tyluni and juga of equal length. Rostrum reaching, 

 as seen through the specimen, opposite a point a little beyond the base of 

 the scutellum. The thorax is pentagonal, the base at least half as long 

 again as the straight, oblique, posterior lateral margins, the nearly straight 

 but slightly convex anterior lateral margins at right angles to the posterior 

 and a little longer than they, the apical border emarginate for its whole 

 length for the reception of the head, and less than half as long as the 

 breadth of the widest part of the thorax and scarcely shorter than the 

 middle length of the thorax. Scutellum triangular, vaulted, of nearly equal 

 length and breadth, the tip angulate and not produced, reaching less than 

 half-way to the tip of the abdomen. Mesosternum much longer than the 

 .metasternum, the coxal cavities of the two hinder pairs of legs contiguous, 

 separated only by a common paries. 



Three species are known, one of them from British Columbia, the 

 others from Florissant, 



Table of the species of Teleozcliistiix. 



Scutellum reaching very nearly half-way to the tip of the abdomen 1. T. antiginis. 



Scntellum reaching barely two-fifths way to the tip of the abdomen. 



Punctuation of costal margin of coriuni clustered along the edge, leaving an open snbmarginal 

 streak free of punctures 2. T. rigoratim. 



Punctuation of costal margin of corium uniform 3. T.plarutti*. 



1. TELEOSCHISTUS ANTIQUUS. 



PI. 2, Figs. 17-19. 



EuschMus anliqum Scudd., Rep. Progr. Geol. Surv. Can., 1876-1877, 459-461 (1878). 



The principal specimen is unusually perfect, and appears to be a male. 

 The head is slightly longer than broad, equal beyond the expanding base, 

 broadly rounded and somewhat flattened in front; the slight carinse marking 

 the borders of the middle lobe are parallel throughout and extend to the front 

 of the head. The thorax is so imperfectly preserved as to throw doubt upon 

 the generic affinities of the insect, but it appears to have been more than 

 twice as broad as long, with a median furrow, and its front margin very 

 slightly concave behind the head ; probably, also, it was considerably pro- 



