H. C. FALL 329 



discal black stripe confluent with the suture posteriorly, and so connected 

 with the narrower marginal stripe as to leave an irregular antero-lateral spot 

 and a smaller apical spot, pale. 



Legs entirely rufotestaceous. 



Length 3.25 mm.; width 2.25 mm. 



Distribution. — The unique type is a female collected at Hot 

 Springs, Arizona, June 27, by Barber and Schwarz and is in the 

 National ]\Iuseum Collection. 



This species strikingly resembles in general form and sculpture 

 integratus, but differs in coloration and in its much more widely 

 separated eyes, and apparently in lacking the terminal spur of 

 the hind tibiae; this spur, however, is very slender in integratus 

 and may be easily broken off, so that it is not impossible that 

 future specimens may show it to be present in conjiexus. 



5. Pachybrachys vigilans new species 



Pale yellowish testaceous with fuscous markings, surface mod- 

 erately shining without alutaceous sculpture, thinly pubescent. 

 Eyes contiguous in the male. Length, 3.5 mm. Lower Cal- 

 ifornia. 



Head. — Front yellow without markings, closely evenly punctate. Antennae 

 slender, attaining the middle of the elytra (male). 



Prothorax moderately transverse, widest at about the basal two-fifths, sides 

 strongly arcuate, apex three-fourths as wide as the base, rather densely i)unc- 

 tate to the extreme margins, the punctures moderate in size, nearly evenly 

 distributed but leaving a few scattered very small slightly elevated smooth 

 areas; disk broadly transversely depressed basally and less obviously so across 

 the apex, leaving the median portions rather strongly convex when viewed in 

 profile. Thoracic M imperfect, consisting of a narrow median anteriorly 

 divided stripe and an irregular lateral spot inclosing a pale area, none of the 

 marks extending much in advance of the middle. 



Elytra slightly narrowed posteriorly, sides sinuate behind the humeri, closely 

 fairly evenly punctate throughout, the punctures forming one or two imper- 

 fect series at the middle of the disk, and again towartl the side margins; a 

 secondary system of very small sparse and inconspicuous or barely detectable 

 interstitial punctures: color pale testaceous with fuscous markings as follows: 

 — a postscutellar and a subapical sutural spot, the hum(>ral knob and median 

 and subapical marginal spots, all quite irregular. 



Beneath, body and legs entirely pale; front tibiae distinctly arcuate, rather 

 feebly w-idened apicallj-; claws small, subequal. 



Length 3.5 mm.; width l.S mm. 



TRANS. AM. ENT. SOC, XLI. 



