ENTOMOLOGICAL NEWS [Dec., '19 



first recurrent ncrvure joining middle of second submarginal cell; 

 legs ferruginous, black at base, and variably black posteriorly, the hind 

 pair strongly so ; fore and middle tibiae with a white dot at base and 

 larger spot apically ; hind tibiae with a large white mark at each end, 

 the interval between blackened ; abdomen brown-black, the first four 

 segments with interrupted cream-colored bands, that on second ex- 

 tremely broad, the fifth and sixth with entire bands, bands on second 

 and third segments emarginate on each side posteriorly, the next two 

 enclosing black spots; apical plate narrow, entire; venter reddish 

 marked with white. 



Longs Peak Inn, in a dry sandy spot, July 21 (Cockerell). 

 Quite distinct from the other species of Phor. Among Cres- 

 son's species of Nomada, it suggests N. gracilis, but that has 

 the apical plate of abdomen notched and the abdomen is dif- 

 ferently marked. In my table of Rocky Mountain species it 

 inns to A r . aqnilantin, which differs in the antennae, etc. 



Nomada sedae n. sp. 



$ . Length nearly 9 mm. ; head, thorax and legs ferruginous, marked 

 with black, the only yellow being a spot on each side near apex of 

 metathorax ; head broad; eyes very dark reddish; mandibles simple; 

 disc of clypeus extremely finely punctured; lower middle of front, 

 region of ocelli, and cheeks posteriorly, black; antennae red above 

 and below; third joint fully as long as fourth, perhaps a little longer; 

 mesothorax closely punctured, with a single median black band ; meta- 

 thorax with a broad median black band; mesopleura red, but sides of 

 thorax black anteriorly and posteriorly; tegulae yellowish-ferruginous; 

 wings dusky, with the usual hyaline area ; stigma clear ferruginous, 

 nervures fuscous ; basal nervures going a short distance basad of 

 transversomedial ; second submarginal cell very large, receiving recur- 

 rent nervure in middle ; legs red, fore and middle femora with a 

 large black basal spot beneath, hind coxae black behind except at 

 apex, hind femora rather extensively blackened at base and behind ; 

 abdomen red, shining, the first segment with more than basal half 

 black, and four minute obscure yellowish spots along the margin of 

 the black; apex of first segment, and second and third subapically, 

 with blackish bands ; second and third segments with very broad but 

 broadly interrupted bright yellow bands ; fourth with an entire band 

 deeply emarginate posteriorly at sides; fifth with a band interrupted 

 on each side, leaving a round lateral yellow spot; margin of fifth with 

 a band of dense silvery white tomentum ; pygidial plate very large, 

 thinly hairy; venter red without yellow markings. 



