THE CANADIAN P:NT()M0I.0GIST. 185 



Collops nigritus, new species. 



Head black, densely punctate ; clypeus reddish. Antenna with first 

 joint relatively strongly angulate at middle, red with a black spot , second 

 joint reddish, on underside blackish; following joints black, rather feebly 

 serrate. Prothorax red ; surface densely punctate with the usual short, 

 pale and erect black hairs. Elytra black, very densely punctate. Basal 

 half of each ventral segment black, apex red. Legs black, apex of anterior 

 coxae reddish. Length 3.5 mm. 



Arizona. 



A single male found among the unmounted material of the Dietz 

 collection. 



From all species with unicolorous elytra, this species differs by the 

 rather strongly angulated first antennal joint of the male, the densely 

 punctate prothorax, and the black elytra. 



Col/ops parvus, new species. 



Head bluish-black; clypeus reddish. Antennae black, first joint red, 

 excavate on inner side. Prothorax red ; surface shining, scarcely punc- 

 tate on the disk. Elytra elongate-oval, blue, feebly shining ; surface 

 moderately densely punctate. Trochanters and femora black, tibiae and 

 tarsi red. Ventral segments red, black at sides. Length 3 mm. 



A single male in the O. Dietz collection from Arizona labelled 

 punctdtus. . . 



Collops exiniius, vd,x. fioridaiius, new var. 



Like eximius Er., except thorax red, without large, black spot. 

 Length 5 mm. 



Florida, collected by R. F. Pearsall and received from A. Nicolay. 



A large series of eximius Er. which I have seen, shows very little 

 variation in the form of the black spot. The series in Mr. Nicolay's col- 

 lection from Florida is also constant, except that in some specimens two 

 faint, narrow, dark spots are visible on 4he thorax. 



Collops aulicus Er. — Entomographien, p. 55. 



I have taken a female specimen in the Huachuca Mts., Ariz., which, 

 according to the figure in the Biol. Cent. Am. Col., Vol. HI, pt. 2, pi. VI, 

 fig. 21 and 22, seems to be that species. However, I have not seen the 

 original description, but, as the species is also reported from Guanajuato, 

 it is more than probable that my surmise is correct. A specimen in the 

 Dietz collection from Arizona, which agrees well with the description of 



