March, 1917.] NiCOLAY : AnTHOPILAX OF NoRTH AMERICA. 37 



same color. Head rather finely densely punctate in front and much more 

 coarsely so between eyes and on occiput, canaliculate between the antennae ; 

 the antennae five sevenths as long as the body, with the first joint large and 

 longer than the second and third together, the second small and transverse, 

 the third about three times the length of the second, two thirds the length of 

 the first, slightly longer than the fourth and broader than either second or 

 fourth, the fourth a little bit longer than one half the fifth. Prothorax two 

 fifths wider than head and wider than long, base slightly wider than apex and 

 about as wide as head, apex feebly arcuate, base slightly lobed at middle, sides 

 strongly, obtusely tuberculate at the middle ; disc rather coarsely and con- 

 fluently punctured, the sides more finely so, the entire surface like the head 

 having a granulose and opaque appearance and with a shallow fovea at middle. 

 Elytra at base slightly less than one third wider than the thorax and not quite 

 twice as long as wide, the humeri prominent, the sides almost straight and very 

 convergent to posterior third where they gradually round to near apex which is 

 subtruncate ; disc very coarsely but not closely punctured from base to middle, 

 thence rapidly more finely punctured to apex. Length 14 mm., width 5 mm. 



The type, a unique male, was collected in the subalpine region of 

 Mt. Jefferson, Oregon, July 20, 1907, by Mr. J. C. Bridwell, and de- 

 posited with me by Professor H. F. Wilson. 



This species has in common with the other western species, the 

 same general type of antennal structure, but otherwise seems to stand 

 apart. It in many ways suggests A. siihvittata Casey and most likely 

 is more closely related to that than to any other, but it differs from 

 that not only by being larger and more robust, but by having differ- 

 ently colored antennae and legs, a different type of punctuation on 

 pronotum, a proportionally much shorter elytra and with a more defi- 

 nite color pattern. From A. tenebrosus Lee. it differs markedly, not 

 only as regards color but by being more grossly punctured and by 

 having proportionally broader and more cuneate elytra; from A. 

 mirificns Bland it differs even more. The range of this conspicuous 

 species is probably throughout the true fir forest belt of the southern 

 Cascades. 



