338 AMERICAN PACHYBRACHYS (cOLEOPTERa) 



often pale brown but sometimes without color, integuments 

 shining, not at all or scarcely alutaceous; eyes distant in both 

 sexes; ocular lines present; front claws of male not enlarged. 

 Ave. length 3.5 mm. Texas to Colorado and California. 



Head rather closely punctate except in front and near the eyes, frontal 

 marks wanting or with only the impressed line darker and faint traces of a 

 vertical spot; ocular lines distinct, one-third to one-fourth the distance from 

 the eye to the median line, blackish above, becoming colorless and fine between 

 the eyes, evanescent inferiorly. Eyes small but somewhat prominent, in 

 the male separated by the vertical length of the eye or about three times the 

 length of the basal antennal joint; in the female by about three and one-half 

 times the length of the basal joint. Antennae blackish apically, attaining the 

 hind coxae in the male and the middle of the metasternum in the female. 



Prothorax not strongly transverse, about one-third wider than long, sides 

 broadly arcuate, feebly narrowed in front, surface rather closely, subevenly, 

 not coarsely punctate, side margins smoother. 



Elytra one-sixth to one-fifth wider than the prothorax, sides parallel, punc- 

 tuation confused, sometimes arranged toward the rear and sides in unimpressed 

 lines of greater or less length; the elytral shield sometimes indicated but usually 

 not. 



Body beneath entirely pale or with the metasternum and abdomen more or 

 less blackish. Legs pale. 



Length 3 to 4 mm; width 1.5 to 2 mm. 



Distribution. — California: Amadee, July 21; Bridgeport; Indio, Aug. 19 

 (all collected by Wickham); San Diego Co. (Coquil'ett); Brawley, May 2. 

 Arizona: Phoenix (Am. Ent. Soc. Coll.); Cottonia, Apr. 18; Bright Angel, 

 July 5; "Ariz" (Morrison); Winslow (Wickham); Seligman, July 30 (Wick- 

 ham). Utah: St. George, July (Wickham); South Creek, Beaver Co., June 22 

 (Schafer Coll). New Mexico: Coolidge (Hubbard & Schwarz Coll.); Bernalillo 

 Co. (Leng Coll.). Colorado: Grand Junction (H. Osborn); "Col" (Am. Ent. 

 Soc. Coll.); La Junta (var. fide Bowditch). Texas: without specific locality. 



There is in this species very little sexual difference in the form 

 of the terminal joint of the maxillary palpus, this being nearlj^ as 

 pointed in the male as in the female. A considerable amount of 

 variation in elytral punctuation is observable in the series at hand. 

 According to Bowditch the La Junta, Colorado, specimens (which 

 I have not seen) are much more coarsely punctate, almost scab- 

 rous in some females; these he considered to have no more than 

 varietal standing. In a Bridgeport, California, female there is 

 a very indefinite M on the thorax and the standard outside 

 elytral spots are faintly indicated (fide Bowditch), 



Specimens of this species from N. Sonora, Mexico, collected 

 by Morrison and bearing the label "P. livens Lee, Jacobj' det." 

 have recently been sent to me from the British Museum. These 



