Specitic Characters in the Bee Genus Colletes 43 
with black bristles on the disk. Apical margin of 1 and 2 and basal mar- 
gin of 2 depressed and contricted. Ventral segment 5 emarginate on ap- 
ical margin. 
6. Length 9 mm. Differs from the 2 as follows: More slender; sides 
of vertex impunctate; antennae long, the flagellum paler. beneath, joint 3 
shorter than 4 or 5, 2+3 longer than 4 or 5, the proportion being 3 :3.5:5:5; 
median flagellar joints one and one-fourth times as long as broad; malar © 
space one-half as long as broad; tibial spurs long, apically deflexed, giving 
a remarkable crooked appearance; posterior tibiae swollen medially; claws 
subapically cleft; abdomen longer, more distinctly punctured; hind meta- 
tarsi about three times as ‘long as broad. 
* Genitalia—Stipes notched, its apex long, slender, submembranous, mid- 
dle joint with long plumose hairs; sagittal rods slender, subparallel or 
slightly converging, abruptly expanded basally, apically with small quad- 
rate wings; volsella rather large; seventh ventral plate fan-shaped, the 
externo-apical corners prolonged and recurved, and bearing an isolated 
patch of dense bristles, internal costae densely haired, the apical mdrgin 
with a few sparse hairs. (Plate 2, figures 12 and 12a.) 
Type Locariry.—Fedor, Lee county, Texas; types in collec- 
tion of the author. 
Originally this species was described from a unique female 
taken at Fedor, Lee county, Texas, April 22, 1904, by Rev. G. 
Birkmann. I have since examined two pairs collected on the 
chapparel at Cotulla, Texas, May 12, 1906, by J. C. Crawford and 
a female taken on Vachellia farnesiana May 9, 1906, by F. C. 
Pratt at the same locality. A single male from Oak Creek can- 
yon, Arizona, 6,000 feet, captured in July by Professor F. H. 
Snow is also referable to this species, which is apparently a 
Lower Sonoran form. : 
SPECIMENS EXxAMINED—Arizona: Oak Creek canyon, 1; 
Texas: Cotulla, 5; Fedor, 1. 
Colletes texanus Cresson. 
1872. Colletes texana Cresson, Transactions of the American Entom- 
ological Society, iv, p. 249, 2 (November, 1872); original de- 
scription. 
1896. Colletes texanus Dalla Torre, Catalogus Hymenopterorum, x, p. 
46 (1896). 
1897. Colletes texana Cockerell, Annals and Magazine of Natural His- 
tory, series 6, xix, p. 45 9 (January, 1897); recorded from Las 
Cruces, New Mexico. 
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