446 Mr. T. D. A. Cockerell on 
yellowish ferruginous, with darker stains. First abdominal 
segment deeply grooved above. 
Hab. Corvallis, Oregon, June 3, 1899 (Cordley). 
Received from Mr. Viereck. 
Nomada placitensis, sp. n. 
2 .—Length about 10 millim. 
_ Head and thorax ferruginous and black, the only yellow 
being a spot on tubercles and a very little at lower corners 
of face; legs bright ferruginous, a yellow spot at apex of 
first four femora above, much black on coxz, a black spot 
on first four trochanters behind, a black stripe on anterior 
femora behind, a black spot at base of middle femora behind, 
a slight spot on hind femora not so basal, a small black 
stripe on hind tibie behind; abdomen narrow, bright lemon- 
yellow, base of first segment with a large black spot broadly 
margined with rufous; apical margin of first segment mar- 
gined with black, and in tront of the black with rufous; base 
of second segment with a very broad inverted triangle of 
rufous; apex of second segment broadly rufous; the next 
two sutures black, more or less broadly margined with rufous; 
venter pale reddish, suffusedly banded with yellow and black. 
Mandibles simply rufous except ends ; first joint of labial 
palpi black, a little longer than the other three together ; 
maxillary palpi long, not very much shorter than galea; 
clypeus (except hind margin), labrum, supraclypeal spot, 
lateral face-marks running to tops of eyes, posterior orbital 
margin, antenne (except stripe on first three joints above), 
two large confluent spots on scutellum, large ill-defined mark 
on pleura, obscure band on postscutellum, four obscure 
narrow bands (the lateral ones marginal) on mesothorax, and 
tegule, all ferruginous ; pubescence of head and thorax pale 
fulvous; scutellum with two prominent bosses ; mesothorax 
as densely punctured as is possible; third, fourth, and fifth 
antennal joints of the same length. Wings dusky, stigma 
orange-fulvous, nervures pale brown; second and third sub- 
marginal cells each receiving the recurrent nervure at its 
middle; second submarginal cell narrowed above, about as 
broad as third on marginal nervure;_ transverso-medial 
nervure joining discoidal at its base. 
Hab. Placita, N. M., May 2, 1903, at flowers of wild plum 
(Cockerell). 
The abdomen is much like that of N. civilis, Cresson. 
I will take this opportunity to mention that the species 
recorded by me from Wet Mountain Valley, Colorado, in 
