H. C. FALL 361 



43. Pachybrachys bullatus new species 



Form rather narrow, yellow, variegated with pale to dark 

 brown, surface polished, eyes very approximate in the male, 

 no ocular lines, elytra -with a transverse row of more or less con- 

 spicuous convex pale spots behind the middle: front claws of male 

 not at all larger than the others. Ave. length 2.7 mm. Arizona; 

 Texas. 



Head rather closely brown punctate, median line fine, front mostly yellow 

 in the male, more brown than j-ellow in the female. Eyes separated in the 

 male by from less than one-half to about four-fifths the length of the basal 

 antennal joint, in the female by shghtly less than twice the length of the basal 

 joint. Antennae about two-thirds the length of the body in the male, a little 

 shorter in the female, color either entireh' pale or with the outer joints duskj-, 

 tenth joint less than three times as long as wide. 



Prothorax moderately transverse, distinctly narrowed in front, sides strongly 

 rounded behind the middle, incurved and sinuate before the basal angles, 

 nearh- straight or sometimes feebly sinuate anteriorly; surface densely, some- 

 what unevenly, rather coarsely punctate, with small raised Loipunctate spots; 

 M represented bj- three basal and two median spots in transverse rows, the 

 spots varying from fairly distinct to quite diffuse and occasionally involving 

 the greater part of the surface. 



Elytra one-fifth wider than the prothorax and about twice as long, sides dis- 

 tinctly sinuate behind the humeri: punctuation quite dense and usuall}- 

 broadly confused on the disk, the marginal interspace and some portions of 

 the others more or less evident and convex, especially toward the rear; a trans- 

 verse row of smaU raised pale yellow spots beginning just behind and outside 

 the sliield and e.\t ending to the side margin; shield small, sometimes indistinct; 

 marginal stria well impressed, more or less irregular near the base: marginal 

 interspace with coarse punctures in basal half. The color is somewhat vari- 

 able. In two females and one male the base, apex and transverse row of 

 spots are alone yellow, and contrast strongly with the general brown color of 

 the disk; in the remaining specimens — all males — the brown color is less ex- 

 tensive and paler, and though diffuse, roughly indicates the standard spots. 



Pyffidiutn j-ellow, slightly darker basally but without any evident maculation. 

 Body beneath brown, apical margin of last ventral yellow. Legs j'eUow with- 

 out spots. 



Length 2.4 to .3 mm.; width 1.3 to 1.7 mm. 



Diiitribution. — Arizoiia: male t\T3e taken by the writer July 3, 1904. at 

 Williams. Also taken by Barber «t Schwarz at the same place during June and 

 July. Xogales, Aug. 26 (Xunenmacherj ; Rincon Mts., 5,000 ft., July (Beyer); 

 Huachuca Mts., July 14 (Wenzelj; "Ari" (Morrison, in Xat'l. Mus. Coll.). 

 Texas: Davis Mts., July 8 (Wenzel). 



This species is one of the most distinct in our faima. It is 

 notable for the very narrowly separated eyes in the male, their 



TRANS. AM. ENT. SOC, XLI. 



