H. C. FALL 393 



a few punctures representing the usual break in the eighth stria, and occasion- 

 ally with one or two further back; shield elongate, usual!}- well developed; 

 standard spots generally small or sul)obsolete, usually more or less linear in 

 form, the outer series not encroaching upon the marginal interspace. 



Pijgidium yellow with black markings, or black marked with yellow. Body 

 beneath black, the last ventral often more or less [)al(\ J>egs pale with faint 

 median femoral and tibial clouds which become more i)ronounced in the darker 

 specimens. 



Length 2.5 to 3.2 mm.; width 1.3.5 to 1.7 mm. 



Distribution. — California: Described from San Diego and Fort Yuma. 

 Arizona: Bright Angel. July 5; Winslow (Wickham); Nogales, Aug. 30 (Xunen- 

 macher); Santa Rita Mountains, 5,000 toS.OOO ft., July (Snow). "Ari." (Am. 

 Ent. Soc. Coll.). Utah: A 9 specimen in my own collection without specific 

 locaUty. N'eiv Mexico: Los Vegas Hot Springs, Aug. 3 to 12 (Barber and 

 Schwarz); Socorro, Aug. (Snow); Cloudcroft, June 16 (Viereck); Magdalena 

 Mountains, Aug. (Snow). Colorado: (Am. Ent. Soc. Coll.). Kanms: Greeley 

 Co., 3,550 ft. (F. X. Williams); "Ks" (Beyer Coll.). Texas: (Belfrage in Nat. 

 Mus. CoU.); Camp San Saba, ]May 27 (Knaus); Green Valley, Chisos Moun- 

 tains, July 14 (Wenzel). 



The most important cluiracters of this species are the widely 

 distant eyes combined with the very large front claws of the 

 male. The integuments are Cjuite distinctly though finely aluta- 

 ceous in some specimens, while in others barel}' visibly so and 

 quite strongly shining. 



77. Paehybrachys brevicollis LeConte 



Dull pale yellow, with ferruginous to fuscous punctures and 

 standard spots, the latter inclined to be diffuse and ill-defined 

 though not very l)road; eyes more distant in the male than the 

 vertical width of their upper lobes; front witiiout ocular lines; 

 front claws of male strongly enlarged. 



Average length 3 mm. Texas to Montana. 



Head not at all wider than the thoracic apex, frontal markings moderate, 

 jmnctuation uneven. Eyes separated by one and one-half to one and three- 

 fourths times the length of the basal antennal joint in the male, and by twice 

 the length of this joint or shghtly more in the female. Antennae moderate, 

 yellow, with the outer joints and a spot on the basal joint blackish, tenth joint 

 (cf ) a little less than three times as long as wide. 



Prothorax strongly transverse, broadly arcuately narrowing toward the 

 front; punctuation dense in the dark areas, the M fairly distinct but somewhat 

 broken, variable in extent, not attaining the front margin; side margins smooth. 



Elytra confusedly closely punctate in a scutellar triangle of variable size, striae 

 distinct laterally and posteriorly, four to six more or less broken except toward 

 the rear, submarginal stria with a slight post-hmneral sinuation, beneath 

 which there are a few pun('tures, more numerous in the female, the marginal 



TRANS. AM. ENT. .SOC, XLI. 



