134 THE CANADIAN ENTOMOLOGIST. 



on Aster commutatus at Ft. Collins, Colo., August 29. Females were 

 taken on Helianthus annum and Malvastrum coccineum. 



A specimen from Ft. Lupton, Colo., has the second submarginal cells 

 very narrow and also narrowed above ; and one of the male specimens 

 has the second submarginal cell in the left wing petiolate, the first and 

 second transverse nervures being coalescent for one-third of their length 

 above, the first recurrent nervure entering the second submarginal cell 

 near the middle in both wings. 



This species is closely related to A. pur a, Say, A. similis, Robt, and 

 A. confusa, Robt. ; but seems to be easily separated from the descriptions 

 of either of them. I have an Augochlora from Mr. E. P. Van Duzee, 

 taken at Colden, N. Y., which answers to the description oi pura, Say. 



A. Coloradensis may be separated from A. pura, Say, by colour of 

 thoracic pubescence, base of mandibles with no green spot, abdominal 

 segments never margined with black; from A. confusa, Robt., by the less 

 metallic tibiae and tarsi ; from A. similis, Robt., by the pure green colour, 

 abdominal segments not at all testaceous. Although near A. neglectula, 

 Ckll., it is a narrower species and also differs in colour and pubescence. 

 I possess two specimens from Elmdale, Mich., that I believe are referable 

 to A. similis, Robt. 



Augochlora neglectula, Ckll. (subg. Augochlora). 



A. neglectula, Ckll. Bull. 24, N. Mex. Agrl. Stat., Aug., 1897, p. 43. 



Two female specimens : Ft. Collins, Oct. 17, and Greeley, Sept. 17. 

 The former was taken on Chrysopsis villosus. This is a bluer species 

 than A. Coloradensis, and the flagellum of the antennae is uniformly paler. 

 There are New Mexico specimens in our collection presented by Prof. 

 Cockerell. 



Augochlora humeralis, Patton (subg. Augochloropsis, Ckll.). 



A. humeralis, Patton. Bull. U. S. Geog. Surv., J 879, p. 365, n. 39. 

 Ashmead, Bull. 1, Colo. Biol. Assoc, 1S90, p. 31. 



This species has been recorded from the State, but I have seen no 

 specimens from Colorado that I can refer to it. Specimens from Onago, 

 Ks., (F. F. Crevecoeur) answer to Patton's descriptions. Mr. Ashmead 

 very kindly examined specimens in the U. S. N. M. of A. humeralis, Patt., 

 marked " N. W. Kans., Williston," and writes me that the hind spur of the 

 hind tibise of the $ has but three spines. 



