REPORT OF ENTOMOLOGIST. 75 
Abdomen with spots; scape darker and more slender; meta¬ 
thorax with a black band (Colo.).coloradelSa Ckll. 
. In addition r to the species recorded in the table, Nomada (Micronomada) putna- 
rtn. Cress., N. (Holonomada) ciffabilis, Cress., N. ( Xanthidium) citrina, Cress., and N. 
(Nomada s. str .) pygmcea, Cress., have been recorded from Colorado, but the records 
appear to require confirmation. The first three are indicated in comparison with 
Rocky Mountain species in tables in Proc. Acad. Nat. 8ci. Phila., 1903, pp. 581, 582 and 009. 
For N. affabilis also see Robertson, Canadian Entomologist, 1903, p. 177. N.pygmsea 
(cf) is about six mm. long, mandibles simple; clypeus, a spot above it, labrum, mandi¬ 
bles and face narrowly on each side of clypeus, yellow; orbits ferruginous; abdomen 
granular. 
DESCRIPTIONS AND NOTES. 
Nomada (Gnathias) iefssda, Cresson. 
Evidently very common at Fort Collins, Colorado, numerous 
specimens of both sexes sent by Prof. Gillette. The dates are from 
May 8 to 17. 
The insect which I described (Proc. Acad. Nat. Sci. Phila., 1903 p. 
000) as the probable 9 of N. schwarzi , is really the 9 of lepida. 
Nomada (Gnaihias) cuneata, (Robertson). 
A $ (sent by Prof. Gillette) was collected at Fort Collins, foot” 
hills, May 10, 1900, by E. S. G. Titus. Others seem intermediate 
between lepida and cuneata , and I rather expect that it will be¬ 
come necessary to regard the latter as a subspecies of lepida. At the 
same time, numerous eastern specimens of cuneata show no inter¬ 
gradation with lepida. It is perhaps a case like that of the bird- 
genus Colaptes. 
Nomada (Gnaihias) albofasciaia, Smith. 
Two ^s (sent by Prof. Gillette); one Fort Collins, foothills, 
April 24, 1900, by Titus; the others u Colo. 1581” taken at Fort 
Collins, foothills, May 6, 1904, by C. F. Baker. 
NcmacSa (Gnaihias) beSla, Cresson. 
A Colorado 9 without locality label (sent by Prof. Gillette). 
Nomada (GnaiSiias) rubreiia, new species. 
length hardly 7 mm.; closely allied to N. schwarzi , but differing 
as follows: Smaller; light markings creamy-white instead of yellow; 
sides of front narrowly, sides of vertex broadly (and enclosing a yellow 
spot), a band behind ocelli, and posterior orbital margins ferruginous; 
mesothorax dark ferruginous with a median black stripe; most of pleura 
ferruginous; metathorax (all black in schwarzi) ferruginous with an 
elongate black mark; middle femora with a little more than the basal 
third black behind, the black very sharply defined from the red; tegulae 
smaller and yellower; first abdominal segment (black right across at 
base in schwarzi) with very little black, only forming lateral hook-shaped 
marks; apical portion of abdomen not blackish; apical plate much less 
strongly notched. In both there is a yellowish mark at the apex of the 
abdomen beneath. 
Habitat. P A ort Collins, Colorado, May 18, 1901,near foothills, taken 
by Mrs. Laura Titus from plum blossoms. 
Nomada (Nomadula) americana variety dacotana, Cockerell. 
$ (sent by Prof. Gillette); the 9s are not distinguishable 
from true americana. Fort Collins, Colorado, May 28 and June 
