i^ THE CANADIAN ENTOMOLOGIST. 



NEW COLEOPTERA CHIEFLY FROM THE SOUTHWEST.— V. 



BY H. C. FALL, PASADENA, CAL. 



The new species herein described have, with a single exception^ 

 come to hand during the past year (1911) and seem worthy of prompt 

 publication, 



Qiiedius compransor, n. sp. 



Robust, head and prothorax black, elytra and abdomen dark rufous, 

 the latter dusky toward the base. Head including the mandibles ( ^ ) 

 slightly longer than wide, gradually wider posteriorly ; eyes small, not at 

 all prominent, distant from the nuchal constriction by about 25^ times 

 their longest diameter ; a large setigerous puncture at the base of the 

 antenr^ai, one at the upper margin of the eye, and two others posteriorly 

 in a transverse line and fully twice as far from the eye as from the nuchal 

 constriction ; front without punctures. Labrum bilobed. Antennae rather 

 stout, filiform, but little longer than the head, joints 4-10 subsimilar and 

 a little wider than long. Prothorax about y^ wider than the head, 1/5 

 wider than long and evidently wider than the elytra at base, and equal to 

 the width of the latter posteriorly ; narrowed in front, sides rounding into 

 the base with but feeble evidence of hind angles ; disk entirely without 

 punctures, margin evidently but not strongly explanate posteriorly. 

 Scutellum impunctate. Elytra subequal in length to the prothorax, punc- 

 tuation fine and rather close throughout. Abdomen similaily but slightly 

 less closely and evenly punctate. Head beneath with a ÎQ'ii fine scattered 

 punctures, lateral carina broadly interrupted. Hind tibiae spinulose. 



Length 9-1 1 mm.; width 2.5-3.2 mm. 



Manhattan, Kansas. 



Described from three males sent me by Mr. Knaus, who writes that 

 they were taken Jan. 6, from the burrow of a ''pocket gopher." 



By Horn's table this interesting species would fall with spelaeus, to 

 which it is allied by the small eyes and explanate side margins of the 

 thorax, this latter character being however less marked than in spelaeus. 

 It differs from spelaeus in its stouter form, colour, ovate head (parallel at 

 sides in spelaeus), with the infraorbital carina obliterated except toward 

 its extremities, and the absence of the usual discal series of punctures 

 near the front of the pronotum, the marginal punctures only being present. 

 The surface of the head and pronotum appears to the eye to be smooth 

 and polished, but as in most species of the genus is really strigillate with 



February, 1912 



