March, 1917.] NiCOLAY : AnTHOPILAX OF NoRTH AMERICA. 43 



June; Yreka, California (Forest Insect Coll. in U. S. National Mu- 

 seum), Boise, Idaho, June 30 (Nicolay collection). 



Because of the striking difference in appearance of the sexes, the 

 female was described by Bland in the same paper with mirijiciis under 

 the name vcnustus. Also because of the great scarcity of material 

 considerable confusion existed in separating not only the female 

 from specimens of tcnchrosns, but even as regarded certain charac- 

 teristics attributed to the male. In every male specimen examined 

 the basal half of the elytra is deeply but sparsely punctured, becom- 

 ing less distinct on the apical half. I can not quite understand what 

 Horn had in mind when he wrote '' impunctate " in his table, unless 

 in comparing it with the females he noted that the basal half was not 

 scabrous, as in the female. This is also the only species having the 

 third and fourth antennal joints equal in length. It is through the 

 kindness of Mr. W. S. Fisher, who made several visits to the Na- 

 tional Museum, that I am able to clear up the doubtful points about 

 this species. 



A. subvittatus Casey. 



A. siibvittata Casey, Ann. N. Y. Acad., 1891, Vol. VI, p. 37. 



Piceous black, moderately robust, rather convex. Elytra pale luteo- 

 testaceous, with a broad common sutural and narrow submarginal vitta of 

 piceoLis-black, the vittas generally feebly marked, sometimes evanescent. Legs 

 and antennae piceo-testaceous. Head finely, densely punctate, finely canalicu- 

 late between the antennas, the latter three fourths as long as body, third joint 

 distinctly longer than fourth, but much shorter than fifth. Prothorax slightly 

 wider than head, a little wider than long, apex slightly narrower than base, 

 both feebly arcuate, sides strongly, obtusely tuberculate at middle, disk finely, 

 densely punctate. Elytral pubescence extremely short and sparse, consisting 

 of very minute erect sets borne from puncttires ; base not more than one third 

 wider than prothorax, about- two and one third times longer than wide, sides 

 distinctly convergent from base to apex ; disk very coarsely and sparsely 

 punctate toward base, becoming finer toward apex and along suture. Length 

 9.3-1 i.o mm. 



Colorado (?) 



The five specimens in Casey's collection and one in the Leng col- 

 lection are without definite locality. However as the material in the 

 Casey collection is from the Levette cabinet, he believes in all prob- 

 abilities the specimens were taken in or near above region. The 

 beetles seem to be all males. This species resembles A. nigrolineatus 

 Van Dyke more closely than any others, but may be readily sep- 



