442 Mr. T. D. A. Cockerell on 
XLITI.—Worth-American Bees, and a new Homopteron. 
By T. D. A. COCKERELL, 
APOIDEA. 
Augochlora confusa coloradensis (Titus). 
Augochlora coloradensis, Titus, Canad. Entom., May 1901, p. 133. 
The difference in the colour of the legs between this and 
A. confusa, mentioned by Titus, does not hold good; but 
coloradensis is uniformly smaller, and seems to be a valid 
subspecies. a 
Hab. Mesilla Park, N. M., at flowers of Aster tenaceti- 
folius, May 20,1 9 (Martin D. Cockerell) ; Roswell, N. M., 
Aug. 21, at flowers of Euphorbia marginata, both sexes 
(T. D. A. Cockerell). 
New to New Mexico. I have confused the Mesilla Valley 
females with A. neglectula, which is a very much bluer 
species. The male of neglectula is very easily known from 
that of coloradensis by the fourth ventral segment of abdo- 
men not being in the least emarginate, the darker and the 
very long antenne, and the legs black with metallic tints, 
not in the lest marked with pale yellow. The region between 
the antenne and the ocelli in male neglectula is a particularly 
fine deep blue, while the clypeus and supraclypeal area are 
green. The third and fourth antennal joints (3) are dull 
black and extremely short, being broader than long, but they 
have also this shape in coloradensis. 
Andrena mimetica, sp. 0. 
9 .—124 millim. long. 
Head, metathorax, and legs black; abdomen and dorsum 
of thorax bluish green, exactly the colour commonly seen in 
Usmia ; pleura dark blue ; pubescence long and erect, black 
and rather dull white; on face (except at sides above), 
cheeks, and occiput it is white; on vertex black; facial 
quadrangle much broader than long; disk of clypeus shining, 
with strong close punctures, and an impunctate median line ; 
facial foveee short and black; process of labrum rather 
narrow, truncate, and strongly emarginate ; tongue short ; 
second and third joints of labial palpus triangular, fourth 
narrow-cylindrical; antennes entirely black, fourth joint 
shorter than fifth, third at least as long as fourth and fifth 
together; mesothorax more or less granular, with strong 
