TENEBRIONID.E 85 



carina which is bifurcate at base, the lateral margin thickened, 

 explanate, rather widely reflexed; apex deeply emarginate, the base 

 slightly bisinuate, the sides very strongly rounded, more suddenly 

 so posteriorly, with a strong constriction in front of the hind angles, 

 which are distinctly acute and rather prominent, the apical acute, 

 feebly rounded; elytra about as wide as the broadest part of the 

 prothorax, almost parallel to about a third from the tip, thence 

 suddenly sinuately narrowed, the apices conjointly rounded; suture 

 elevated posteriorly; costae three in number, the first nearly straight, 

 parallel to the suture, reaching the base but abbreviated at apex, 

 the second parallel to the first, slightly shorter at each end, the third 

 forming an overhanging elytral margin to just beyond the tip of 

 the second, where it curves in and becomes discal though fading 

 out before attaining the elytral apex, the costae not confluent at any 

 point; body beneath with large scale-bearing punctures, distant 

 on the abdomen but closer on the thoracic segments; legs densely 

 scaly and relatively stouter than in Ologlyptus anastomosis. Length 

 9.0 mm. Texas (Cameron Co.) texanus Wick. 



This description is drawn directly from that of Prof. Wickham 

 (Can. Ent., 1903, p. 72). The apex of the prosternum is said to be 

 deflexed, in the author's opinion excluding it from Astrotus. It is 

 probable that the Astrotus limosus of Champion, is also a species 



of Stenosides. 



Pactostoma Lee. 



The body in this genus, which was published in 1858 and therefore 

 antedates Ologlyptus (1859), is of small size, elongate, rather convex 

 form, with the anterior parts smaller or the elytra relatively more 

 inflated than usual; the hind body is however never notably stout. 

 The integuments and antennae are finely chagrined in texture, dull 

 and punctured, each puncture bearing a stout recurved and very 

 distinct pale hair. The mentum closely fills the buccal opening, 

 extending almost but not quite to the closed mandibles and rests 

 upon a broad and very short gular pedestal. Antennae rather 

 slender, with more elongate joints than in Astrotus and with the 

 usual tribal structure of the apical parts, the epistoma broadly 

 sinuate-truncate, the labrum feebly sinuate medially, only moder- 

 ately transverse and the eyes coarsely faceted. The elytra are 

 more shining and are evenly oblong-oval as a rule, sometimes 

 slightly broader behind the middle, with the base equal in width to 

 the thoracic base or but little wider, sometimes with a fine con- 

 striction just behind the humeral angles, which are distinct and 

 narrowly though feebly reflexed. The acute margin is gradually 



