PTEROSTICHINJE 351 



name heros Say, but on examining the description of Say, which is 

 repeated under the next genus, it would seem to be conspicuously 

 different. The striae in heros are said to be fine but acute and punc- 

 tate, the punctures obsolete posteriorly. In gigas the striae are 

 extremely and equally fine throughout the length and are composed, 

 in the female at least, of minute and short lineiform dashes, in no 

 way resembling punctures and equally evident from base to apex 

 similar to the apical part of the striation in the female of Eumo- 

 lops ampla. In the drawing of an assumed heros, from Texas, given 

 by LeConte (]. Ac. Phila., IV, t. 4, f. 2) the thoracic base is much 

 narrower than the apex and the side margins are much more widely 

 reflexed; in a drawing such as this the elytral sculpture of gigas 

 would be entirely invisible. Neither Say nor LeConte alludes to 

 any deflection of the apical thoracic angles, which is so conspicuous 

 a feature in gigas, and the figure referred to gives no indication of 

 it. The size of heros, as given by Say, is materially less than that 

 of gigas. In Eumolops ampla the sculpture of the elytra is exactly 

 that which might be inferred from Say's description of heros, but 

 this species is evidently different, being much more abbreviated. 

 In describing heros, LeConte (Proc. Ac. Phila., 1873, p. 318) states 

 that the scutellar stria is long; in gigas the sutural stria in its ob- 

 lique basal part becomes much coarser and deeper than the rest of 

 the stria, and the author quoted may have mistaken this for a scu- 

 tellar stria in his Texan representative of heros, if congeneric with 

 gigas. In gigas there is only a feeble diffuse impression surround- 

 ing the ocellate puncture, in no way resembling a stria. 







Eumolops n. gen. 



The species of this genus are rather numerous and were included 

 under Evarthrus by LeConte; the entire habitus, not only due to 

 the deeply constricted prothorax but in other features, is however 

 quite different from that of Evarthrus, as may be seen readily when 

 series of the two genera are juxtaposed. The maxillary palpi in 

 Evarthrus, although not notably stouter than in Eumolops, have 

 the last joint not fusiform and with the apex more truncate. The 

 prothorax is varied in form somewhat as in Hypherpes, in having 

 the base equal to or wider than the apex to very much narrower, 

 like that of the much smaller Anaferonia, and the foveae are always 



