380 AMERICAN PACHYBRACHYS (cOLEOPTERA) 



triangular; marginal interspace impunctate in the male, often with one or two 

 punctures at middle in the female; spots moderate in size to rather large, 

 usually quite distinct, but with some tendency to diffusion. 



Pygidium almost entirely dark or with varyingly developed apical pale 

 spots. Body beneath fuscous, the abdominal apex pale. Legs pale with small 

 median darker spots or shades on femora and tibiae, these sometimes almost 

 obsolete. 



Length 2.8 to 3.4 mm; width 1.45 to 1.85 mm. 



Distribution. — Texas: El Paso, April (Fenyes), type $. N'eiv Mexico: 

 (Nat. Mus. Coll.). Arizona: Santa Rita Mountains, Apr. 17 (Clemence); 

 Catalina Springs, Apr. 12 to May 7 (Hubbard & Schwarz); "Ari" (Morrison — 

 Nat. Mus. Coll.), (Leng Coll.), (Schaeffer Coll.). 



63. Pachybrachys brevicornis new species 



Robust, yellow, with more or less heavy fuscous standard 

 markings; eyes moderately distant, front with ocular lines; 

 antennae unusually short (9); elytra strongly striate; front 

 claws of male not ap])reciably enlarged. Ave. length 2.9 mm. 

 Texas. 



Head moderate in size but with the eyes rather prominent, standard sjiots 

 usually small or wanting except the one on the vertex, which is well developed. 

 Eyes ( 9 ) separated by rather more than twice the length of the basal antennal 

 joint. Antemiae ( 9 ) short, scarcely passing the shoulder knob, the tenth 

 joint scarcely twice as long as wide; outer joints infuscate. 



Prothorax strongly transverse, widest at basal third, or two-fifths, sides 

 rather strongly rounded and strongly narrowed in front; punctuation close, 

 dense in the dark areas, the latter usually broad leaving the side margins and 

 three discal spots pale; punctuation less dense along the margin, which is 

 narrowly smooth posteriorly. 



Elytra diffusely pimctate in a not very large basal-sutural triangle, elsewhere 

 with distinct striae which are rather strongly impressed laterally, the fifth and 

 sixth more or less broken or irregular at middle, the eighth with a subljasal 

 dislocation; marginal interspace impunctate; shield conspicuous, elongate 

 triangular. The color may be described as yellow with more or less heavy 

 confluent standard spots which vary from brown to nearly black; or as brown 

 or blackish with the basal margin, some short spurs e.xtending backward from 

 it, two short interrupted lateral transverse fasciae, the shield, and the apex, 

 yellow. 



Pygidium brown or fuscous with or without the usual yellow spots. Body 

 beneath brown to fuscous with the last ventral in part yellow. Legs brownish 

 yellow, with darker femoral rings or clouds var3-ing in intensity. 



Length 2.75 to 3.1 mm. width 1.5 to 1.8 mm. 



Distribution. — Texas: Goliad, Apr. 18 (Schwarz); Cypress Mills, May 26 

 (Leng Coll.). The type is labeled simply "Tex," as ar(> other examph^s in the 

 Ijeng and Liebeck Collections. 



