370 AMERICAN PACHYBRACHYS (cOLEOPTERA) 



by about three-fourths times the length of this joint or by a distance subequal 

 to the vertical width of their upper lobes. Antennae very slender, more than 

 three-fourths the length of the body in the male, the tenth joint four times as 

 long as wide; in the female somewhat shorter, tenth joint fully three times as 

 long as wide. 



Proihorax distinctly narrowed in front, widest not far behind the middle in 

 the male, at about the basal third in the female; sides strongly rounded at 

 point of greatest width; dark areas densely punctate, pale areas smooth or 

 sparsely punctate, interspaces sparsely minutely punctulate; side margins 

 impunctate, more broadly so posteriorly; M broad and entire leaving three 

 rather small elongate discal pale spots and the side margin yellow, the latter 

 wider at front angles and extending narrowly along the anterior margin. 



Elytra a little wider than the prothorax in the female, scarcely at all so in 

 the male, punctuation moderately dense and broadly confused on the disk, 

 the third and fourth striae not impressed but traceable nearly throughout in 

 the male, less distinct in the female, fifth and sixth intricately confused, 

 seventh irregular or interrupted, eighth entire and impressed; marginal inter- 

 space impunctate (9), a single puncture at middle in the male type; shield 

 large broadly subtriangular; maculation irregular, the lateral standard spots 

 separated by irregular pale areas, the discal spots diffuse and confluent, the 

 shield yellow^ and conspicuous. 



Pygidium black and 3-ellow; body beneath blackish, last ventral segment 

 yellow in apical half. Front femora yellow, middle and hind femora with 

 median dark spots; tibiae dusky, sometimes in part pale. 



Length 3.7 to 3.8 mm.; width 2 to 2.15 mm. 



Distribution. — Texas: Green Valley, Chisos Mts., Brewster Co., July 15 

 (type c?); Chisos Mts., July 23 ( 9). A single pair collected by Mr. H. A. 

 Wenzel. 



54. Pachybrachys illectus new species 



Brown and yellow mottled, finelj^ aliitaceous; e3'es separated 

 in the male by barely the length of the basal antennal joint, 

 and by about one and three-fourths times the length of the basal 

 joint in the female; front without ocular lines; front claws of 

 male very large. Ave. length 2.75 mm. Florida. 



Head not very closely somewhat unevenly punctate, front predominantly 

 yellow, the median line and a rather large vertex spot brown; eyes not promi- 

 nent; antennae about two-thirds (d^) or one-half ( 9 ) the length of the body, 

 yellow, the apices of the outer joints dusky, tenth joint barely three times as 

 long as wide (d^) or slightly shorter ( 9 ). 



ProUiorax of moderate length (cf ), or rather short ( 9 ), widest and broadly 

 very obtusely sul)angulate near the basal fourth, sides nearly straight and not 

 strongly convergent in front; ])unctuation uneven, closer in the dark areas, 

 side margins narrowly smooth; M brown, consisting of broad nearly entire but 

 somewhat irregular lateral areas, imperfectly connected at apex with an entire 

 median stripe which is wider in its anterior half and divided in front by a fine 

 yellow line. 



