384 AMERICAN PACHYBRACHYS (cOLEOPTERA) 



without ocular lines; eyes separated by the length of the basal 

 joint of the antennae in the male; front claws of male slightly 

 larger. Ave. length 4 mm. Kansas to Texas. 



Head moderate, punctuation close, a little uneven in distribution, markings 

 variable, usually more distinctly defined in the male, broader and diffuse in 

 the female, sometimes almost uniformly rufous (cf 9). Eyes in the male 

 separated by the length of the first antennal joint, in the female by one and 

 three-fourths to nearly twice the length of the basal joint. Antennae very 

 slender, fully three-fourths the length of the body in the male, tenth joint more 

 than three times as long as wide. 



Prothorox widest at basal one-third or two-fifths, much narrowed in front, 

 strongly rounded at sides behind the middle, punctuation rather coarse, fairly 

 close in the darker areas, elsewhere sparser, side margins narrowly smooth 

 anteriorly, more widely so behind; markings as a rule very broad and cjuite 

 diffuse; sometimes involving the whole disk, leaving only the side margins 

 pale, the anterior angles more broadly so. 



Elytra very coarsely punctate, closely diffusely so in the scutellar region, 

 striae rather deeply impressed throughout, the first terminating anteriorly at 

 the shield, two and three entire, four variable, five and six distinct in posterior 

 half, seven and eight entire; marginal interspace impunctate, all the intervals 

 convex, strongly so at sides and posteriorly; shield subtriangular, more or less 

 distinct; standard spots more or less defined, the anterior two and Ukewise the 

 posterior ones usually subcoalescent to form two more or less irregular trans- 

 verse fasciae. 



Pygidium red-brown and yellow, the latter predominating. Body beneath 

 reddish brown, last ventral segment pale at apex. Legs rufo-testaceous 

 throughout, or yellowish with the middle and hind thighs faintly clouded with 

 rufous. 



Length 3.7 to 4.3 mm.; width 2 to 2.45 mm. 



Distribution.— Texas: (Type— LeConte Coll.); (Belf rage— Nat. Mus. Coll.); 

 "P. Saddle" (Leng Coll.); Round Mountain, and Seabrook, Aug. 9 (Wenzel). 

 Kansas: Douglas Co.; 900 ft. (Snow); Onaga (Wickham Coll.); Sahna (Knaus); 

 "Kans." (various collections). 



68. Pachybrachys laticollis Jacoby 



Size large, reddish brown variegated with numerous small 

 yellow spots, lustre dull; eyes separated in the female by a dis- 

 tance subequal to the vertical width of their upjoer lobes, front 

 without ocular lines; elytra deeply striate at sides and behind; 

 front claws of male prol)ably distinctly enlarged (not yet seen). 

 Ave. length 4 mm. Texas and Arizona. 



Head moderately punctate, yellow with broad reddish brown markings; eyes 

 ( 9 ) separated by barely twice the length of the basal antennal joint; antennae 

 ( 9 ) about three-fifths the length of the body, paler toward the base, tenth joint 

 scarcely two and oiic-liiilf times as long as wide. 



Prothorax rather long, nearly as wide as the elj-tra, sides, subi)arallel or 



