392 AMERICAN PACHYBRACHYS (cOLEOPTERa) 



assigning the species a place in the classification here adopted, 

 I addressed a letter of inquiry to Prof. S. J. Hunter of the Uni- 

 versity of Kansas, who very kindl,y examined the type and 

 answered my questions so far as possible. Unfortunately the 

 claws are lacking on both front tarsi of the type, which makes 

 it impossible to place the species with any certainty. The sur- 

 face is somewhat shining though with distinct alutaceous sculp- 

 ture; the eyes are separated by twice the length of the basal 

 antennal joint, tenth joint "3 to 3J" times as long as wide; 

 ocular lines wanting. The marginal interspace of the elj^tra is 

 said by Professor Hunter to l)e punctate but from a sketch of the 

 elytra sent by him I should judge that it was not; a doubtful 

 point. I have assumed that the front claws are enlarged, but as 

 this is scarcel}^ more than a guess, the species must be regarded 

 as tentatively placed. 



70. Pachybrachys caelatus LeConte 



Dull pale yellow, markings varying from rather heavy and al- 

 most black, to entirely wanting on the elytra and with only 

 faint pale brownish shades on the prothorax. Eyes very widely 

 separated, front sparsely punctate except in the median impres- 

 sion, without ocular lines. Elj^tral striae for the most part 

 fairly regular and entire; front claws of male very large. Average 

 length 2.8 mm. Kansas and Texas to southern California. 



Head subequal in width to the thoracic apex, front unevenly punctate, 

 sparsely so in the pale areas. Eyes separated in the male by fully twice the 

 length of the basal joint of the antennae and in the female by more than three 

 times the length of this joint, or by nearly the entire length of the eye. Mark- 

 ings variable in extent, the pale color commonly predominating. Antennae 

 moderate, scarcely more than two-thirds the length of the body in the male, 

 outer joints blackish, the tenth about three times as long as wide. 



Prothorax moderately transverse, evidently but not strongly narrowed in 

 front, widest near the base, sides feebly arcuate, punctuation somewhat sparse, 

 closer as usual in the darker areas, side margins smooth; markings variable, 

 the M sometimes very broad, leaving only three elongate pale discal spots, but 

 usually much narrower and more or less disintegrated, the pale areas fully as 

 ex-tensive as the dark. 



Elytra with confused punctuation in a rather small scutellar area, otherwise 

 with more or less regular lightly impressed striae, the eighth usually neai'ly 

 straight throughout, fifth and sixth sometimes a little confused and the inner 

 ones also somewhat variable in degree of regularity; marginal interspace with 



