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. 



Hah. Troublesome, Colorado, alt. 7345 ft., June 9th, 1908 

 (S. A. Kobwer). One male and five females, the type being 

 one of the latter. 



Nomada ivootonella, n. sp. 



<y . A small species closely related to N. sayi, Eobertson, 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 N. sayi. The N. sayi compared is an authentic specimen 

 from Eobertson. 



Hah. 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. S. A. Eohwer took 

 both sexes. The female runs in my table of Eocky 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, 

 antennae otherwise wholly ferruginous, without black or dusky ; 

 mesothorax rough, black, with a little red at extreme sides ; tegulaa 

 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 tibiae 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 



) 



