H. C. FALL 337 



near the eyes; front claws of male not evidently enlarged. Ave. 

 length 3.7 mm. Western Texas to California. 



Head thickh' punctate in the frontal marks, which are broad, faint and ill 

 defined. Eyes prominent, separated by twice (cf) or three times (9) the 

 length of the basal antennal joint. Antennae short , barely n>aching the humeri 

 in the female and not passing the middle of the metastenium in the male; 

 outer joints blackish. 



Prothorax moderately transverse, not much narrowed in front, sides slightly 

 mcurved at base, surface coarsely somewhat unevenly i)unctate, with scattered 

 minute interstitial punctures, a narrow incomplete .smooth median line some- 

 times present. 



Elytra nearh' parallel, i>imctuation broadly confused on the disk, the two 

 outer striae entire and distinctly impressed, the interior ones distinct only 

 posteriorly, gradually shorter and less impressed toward the suture, interstices 

 minutely punctulate, elj-tral shield wanting or very small; submarginal stria 

 with a strong sigmoid flexure behind the humerus; marginal interspace more 

 or less punctate. 



Body beneath yellow with the metasternum and abdomen, except the margins, 

 more or less rufo-testaceous or pale brown. Legs yellow with diffuse darker 

 shades at middle of femora. 



Length 3.2 to 4.2 mm; width 1.65 to 2.3 mm. 



Distribution. — Texas: without definite localit}' (Beyer Coll.); El Paso. 

 Arizona: Tucson, Dec. 14 (Hubbard), July 13-15 (Wickham); Phoenix; 

 Florence, Aug. 10 (Biederman); Bill ^^'illiams Fork, Aug. (Eugene Smyth). 

 Utah: St. George, July (Wickham). California: Palm Springs, Feb. 14 (Hub- 

 bard); Olancha, Jime (Fenyes); Needles (Wickham). Bowditch also gives 

 IMojave, Inyo Mts. and Darwin — all collected by Wickham. 



17. Pachybrachys xantholucens new species 



Very similar in form, size and color to mellitus, differing as follows: Color 

 a slightly deeper yellow as a rule, with, in most specimens, faint traces of the 

 basal portions of the thoracic M; upper surface poUshed throughout, without 

 trace of minute alutaceous sculpture; front without ocular lines, the supra- 

 orbital groove being strictly marginal throughout ; eyes more distant, separated 

 by about two and one-half times (cf ) or 4 times ( 9 ) the length of the basal 

 antennal joint, the distance in the latter sex being as great or slightly greater 

 than the vertical length of the eye. Elytral striae more regular than in 

 mellitus, punctures much sparser and more nearly serial in the scutellar area; 

 second elj-tral interspace wide in posterior half; marginal intersi)ace nearh- 

 or quite impunctate. 



Length 2.6 to 4 mm; width 1.4 to 2.35 mm. 



Distribution. —Texas: El Paso (type c?); "Texas" (Horn Coll.), (Wickliam); 

 Chisos jVlts., July 16 (Wenzel). New Mexico: Alamogordo, Apr. 29 (Viereck.). 



18. Pachybrachys jacobyi Bowditch 



^Moderately robust, pale whitish or grayish yellow, thickly, 

 finely and for the most part diffusedly punctate, the punctures 



TRANS. AM. ENT. SOC, XLI. 



