NEW AMERICAN BEES. 93 
pointed, entire; venter red, with black only on first segment. The 
markings of the abdomen are not unlike those of N. gracilis, but the 
apical plate is entirely different. 
Hab. Troublesome, Colorado, alt. 7345 ft., June 9th, 1908 
(S. A. Rohwer). One male and five females, the type being 
one of the latter. 
Nomada wootonella, n. sp. 
3. Asmall species closely related to N. sayz, Robertson, but differ- 
ing as follows:—Head broader, eyes more diverging above; lateral 
face-marks not so large below; eyes pale green; pleura with a dull 
yellowish spot in front; legs light ferruginous, the anterior ones 
largely yellowish, and the others spotted with yellow, the hind femora 
with a brown spot behind near apex; abdomen with the yellow mark- 
ings enlarged, so that the second and third segments have very broad 
bands, narrowed and interrupted in the middle ; apical plate entire, 
or with only a faint trace of the emargination which is so con- 
spicuous in V. sayz. The N. sayz compared is an authentic specimen 
from Robertson. 
Hab. Mesilla Park, New Mexico, April 26th (T. D. A. Cock- 
erell). At flowers of Sophia ochroleuca, Wooton. Named after 
Prof. Wooton, of the New Mexico Agricultural College, who 
described the plant it visits. 
Nomada civilis, Cresson, 1878. 
Cresson described this from nine males collected in Colorado. 
It is very variable, both in size and markings. At Troublesome, 
Colorado, alt. 7345 ft., June 9th, 1908, Mr. 8. A. Rohwer took 
both sexes. The female runs in my table of Rocky Mountain 
Nomada (Bull. 94, Colo. Exper. Sta.) to N. agynia, male, but is 
quite distinct from that species. As is usual in the group to 
which the species belongs, the female N. civilis is very unlike 
the male, agreeing, however, in the very broad face, with the 
orbits diverging above. The following characters of the female 
are distinctive :— 
Lower part of face, including labrum and supraclypeal mark, 
lemon-yellow; orbital margins above middle of face broadly ferru- 
ginous, this continuing over to the cheek, on the lower half or more 
of which it gives way to yellow; scape ordinary, yellow in front, 
antennz otherwise wholly ferruginous, without black or dusky ; 
mesothorax rough, black, with a little red at extreme sides; tegule 
light ferruginous, with a yellow spot in front; tubercles and upper 
margin of prothorax yellow; pleura ferruginous, with a suffused 
yellow patch; scutellum and postscutellum yellow, with reddish 
hair; metathorax black, with a pair of large round light red spots, 
varying to slightly yellowish in the middle; legs clear ferruginous 
red, the apices of the femora and anterior and middle tibize con- 
spicuously marked with yellow ; abdomen bright lemon-yellow, with 
clear ferruginous bands above and below; on the first segment the 
yellow is reduced to a mark (one-third of a band) on each side, and 
