410 AMERICAN PACHYBRACHYS (cOLEOPTERA) 



Prothorax rather long, sides strongly rounded at basal fourth, incun'ed at 

 base, straight or nearly so and strongly con\^ergent in front, punctuation close, 

 narrowly sparse along the side margins, markings usually small and diffuse, 

 representing the basal portions of the standard 'SI. 



Elytra less than two and one-half times as long as the prothorax, punctures 

 somewhat coarser than on the prothorax, variable in density, for the most 

 part confused, but with some traces of serial arrangement here and there, 

 especially toward the sides, these quite unimpressed on the disk, and only 

 feebly so at sides; one or two more or less complete lateral striae are usually 

 evident in the male, these being often more or less irregular or double in the 

 female; marginal interspace punctured toward the base only; shield wanting; 

 standard spots black, the outer series rather sharply defined, the inner ones 

 sometimes so, but frecjuently more or less confluent lengthwise and irregularly 

 disintegrated. 



Pygidium blackish with two large rounded narrowly separated subapical 

 pale spots. In the female the pygidium is flatter than in the male and there 

 is an entire broad and thin reflexed margin, which is wanting in the latter sex. 

 Body beneath variable in color, from almost entirety rufo-testaceous to blackish 

 with the greater part of the last ventral, and the sides and apical half of the 

 preceding segments, yellow. 



Legs yellow, the femora with faint median rufo-testaceous clouds. 



Length 5.2 to 6.5 mm.; width 2.5 to 3.2 mm. 



Distribution. — Arizona: Williams, June 30 to July 20 (Barber & Schwarz); 

 Huachuca Mountains, 9,000 ft., July 5 (Beyer); Palmerlee, July 11 (Wenzel); 

 Santa Rita Mountains, 5,000 to 8,000 ft., July (Snow). 



The type series was taken at Williams. The specimens from 

 the Huachuca and Santa Rita Mountains average a little larger, 

 and those from the Huachucas- — females only — have the protho- 

 racic markings blackish and more complete. This is the largest 

 species in our fauna. A specimen from the Santa Rita Moun- 

 tains (Snow Coll.) bears a label "longulus Suffr.?" in'Bowditch's 

 handwriting. Our species does not fit Suffrian's description in a 

 number of particulars and I hardly think it possible that the two 

 are the same. According to the description of longulus the thorax 

 is short and broad, the elytra more than three times as long as the 

 latter, and the markings are entirely rust colored. Smaller 

 specimens of this species resemble somewhat closely some exam- 

 ples of fuscipes var. purgatvs: for a statement of differences see 

 remarks under the latter. 



93. Pachybrachys fuscipes new species 



Dull dirty yellow, pronotum more or less completely suffused 

 with reddish brown, with the M imperfectly and obscurely repre- 

 sented by darker brown or fuscous shades; elytra similarly suf- 



