Jan., 'lO] ENTOMOLOGICAL XF.WS. 



Colorado," 9000 feet; "Colorado," and "Cloudcroft. Xew M 

 ico." There is a single example, labeled -imply "Col." in the 

 Le Conte collection and placed with inixtns. 



This is evidently the form referred to by 1 Iamilt.>n ( "Trans. 

 xxiii, p. 135) as Le Contes simplex; an erroneous detennina- 

 tion, however, the true simpler being in no appreciable way 

 different from ty])ical mixtus. In the original description of 

 simplex the apices of the elytra arc- -aid to In.- rounded, but a 

 recent examination of the type by the writer shows them t<> In- 

 truncate and feebly sinuate, the sutnral angle -dightly pruini- 

 nent. 



The following table is offered for the separation of the 

 twelve species now known to us: 



SYNOPTIC TABLE. 

 Elytra each with a strong subbasal discal crest ; sides of l><i<ly and i 



with long flying hairs, antennae with moderate hairs ; outer 

 apical angle of elytra spiniform. 7-9^2 mm. California ; Van 



couver Island crinitisl.ee. 



Elytra not or but feebly cristate at base. 



Legs and antennae with long flying hairs ; apex of elytra rounded. 

 Lateral tubercle of prothorax acute, spiniform. 5-8 mm. Lower 



California ... volitans I 



Lateral tubercle of prothorax obtuse. 



Elytral disk with yellowish brown area which extends foiw.ird lat- 

 erally to the humeri, and posteriorly as a gradually narrowing 

 sutural stripe nearly to the apex; last ventral of female foveate 



at apex. 9. 5 mm. Arizona negundo Scliaef. 



Elytral disk with a somewhat diffuse grayish area just before the 

 middle, not extending backward along tin- suture ; apex of 

 last ventral of female broadly obliquely ascending or leveled 



but not foveate. 7-9 mm. Arizona obscnrus n. 



Legs and antennae without long flying hairs. 

 Elytral apices rounded. 



Elytra and prothorax clothed uniformly with gray pii: 

 with a few small tufts of short black hairs on tl.< 

 intervals. 6 '4 mm. Tulare Co., Cal. . . californicus S 

 Elytra clothed with gray pubescence in about basal half and apira 

 third, the intermediate area forming a broad transx- 

 fascia. 8-9 mm. Idaho. < >regon, California . . oregonns 1 

 Elytral apices emarginate, with more oi less distinct limiting 

 Elytra each tricostate, the lateral costae stroi nnei on< 



ler and bearing a series of four 01 five tufl : M.u I 



