REPORT OF ENTOMOLOGIST. 
85 
closely punctured; facial quadrangle much broader than long; mandibles 
very shiny, pale reddish with black tips and more or less yellow bases; 
labrum, clypeus, and sides of face on each side of clypeus, yellow, the 
yellow not sharply defined from the red just above; ocelli on a black 
patch, connected with a black patch on front, but leaving a red mark in 
front of middle ocellus; frontal patch sending black bands to sides of 
clypeus, these and the narrowly blackened upper clypeal suture making 
a large A; posterior orbital margins very broadly red, with a large yel¬ 
low stripe on the lower two-thirds; antennae long, red without any black, 
scape yellowish in front; third joint longer than fourth; mesothorax 
coarsely rugoso-punctate, red with three rather ill-defined black stripes; 
prothorax black, with its upper border, and the tubercles, yellow; pleura 
red, with a black spot beneath; a broad black band from wings to middle 
and hind coxae; scutullum red suffused with yellow; postscutellumbright 
yellow; metathorax black, with a large red spot on each side; tegulae red; 
wings yellowish, apical margin not much darker than the rest; stigma 
bright orange-ferruginous, nervures pale brownish; second submarginal 
cell moderately narrowed above; third of the narrow type; basal nervure 
a long distance basad of transverso-medial; legs bright red, antferior and 
middle femora with more or less of a yellow apical spot; hind femora 
wholly without black; abdomen very minutely rugoso-punctate; first seg¬ 
ment red with a transverse yellow mark on each side; second red with 
very large pyriform yellow marks; third similar, but with even more yel¬ 
low; fourth yellow except extreme base and apical margin: fifth yellow; 
venter banded with yellow and red. 
In Robertson’s tables this runs to Holonomada, but it is closely re¬ 
lated to some of the species which are referred to Xanthidium. 
Ncmaria libata, Cresson. 
This is erroneously called limbata in Dalla Torre’s Catalogue. 
Mr. Rehn has kindly examined Cresson’s type and finds the 
apical plate rather narrow, deeply notched; the ventral surface of 
abdomen immaculate except the apical margins of the three termi¬ 
nal segments, which are yellow to a considerable degree; scape 
normal. 
These characters are in part similar to those of N. armatella , 
which may be known from libata by the absence of yellow on ven¬ 
ter and the basal nervure far basad of transverso-medial (in N. 
libata , parata , bethunei and coloradensis it is only a little basad 
of it). 
Nomada dilucida, Cresson. 
Mr. Rehn has kindly examined Cresson’s type 5, and finds it 
differs structurally from N. morrisoni thus: labrum narrower, 
more rectangular; scape heavier and more robust; abdomen glab¬ 
rous instead of pubescent. 
I am extremely indebted to Mr. Viereck, who has most kindly 
examined all of the types in the collection at Philadelphia, and 
reported on the venation and proportions of the third and fourth an¬ 
tennal joints. 
Nomada frieseana, Cockerell and N. semiscita, Cockerell. 
These two species were discovered at Colorado Springs since 
this paper was written, and described in Annals & Mag. of Nat- 
Hist., July 1904. N. frieseana is allied to N. rubicunda , and N. 
semiscita to N. scitiforrnis m 
