446 AMERICAN PACHYBRACHYS (cOLEOPTERA) 



the length of the basal antennal joint in the male, and by but little 

 less than three times the length of the basal joint in the female. 



Distribution. — Arizona: Without more definite locality — 

 (Schaeffer), type cf. Also an example in the Nat. Mus. Coll. 

 (Linell). 



It is not absolutely certain that the single female is properly 

 associated with the three males sent; the latter are therefore to 

 be considered typical. It is not at all unlikely that this is only 

 an extreme form of nubilus. 



126. Pachybrachys subvittatus LeConto 



Robust, shining, yellow, prothorax with a median anteriorly 

 divided black vitta, and a broader more diffuse brown or brown 

 and black sublateral vitta each side; elytra with the sutural and 

 lateral edge and small standard spots black, the outer series sub- 

 marginal and distinct, the inner spots narrow or linear and form- 

 ing a dislocated interrupted disco-sutural vitta. Eyes moderately 

 distant; front without ocular lines; front claws of male only 

 slightly enlarged. Length 3.6 mm. Texas. 



Head with the tyi^ical black markings well developed, pale areas nearly 

 smooth, dark areas closely punctured; eyes separated in the male by twice the 

 length of the basal antennal joint. Antennae moderate, scarcely three-fourths 

 the length of the body in the male, the tenth joint three times as long as wide 

 or slightly less. 



Prothorax strongly transverse, widest at or a little in front of the basal third, 

 where the sides are rather strongly rounded; moderately narrowed in front and 

 rounded in at base; punctuation fairly close in the dark areas, rather sparse 

 elsewhere, smooth between the forks of the median vitta; side margins narrowly 

 smooth. 



Elytral punctures black, confused in a small sutural triangle, striae elsewhere 

 more or less sinuous but subentire, hghtly impressed on the disk, more evidently 

 so laterally, eighth stria with subbasal dislocation, marginal interspace impunc- 

 tate, shield not evident. 



Pygidiwn black, with or without apical yellow spots. Body beneath black. 

 Legs rufo-testaceous, the tarsi and apical parts of the tibiae dusky. 



Lemjfh 3.6 mm.; width 2 mm. 



Distribution. — Texas. The type series in the LeConte Collection consists of 

 four males, probably collected by Belfrage. The species is also rei)resented 

 in the Nat. Mus. (Belfrage), Horn, Am. Ent. Soc. and Leng Collections, but 

 by very few examples, and all labeled simply "Tex" except one specimen in the 

 Leng Coll. which is marked "Blowout." 



