THE CANADIAN ENTOMOLOGIST. 189 



SOME BEES OF THE GENUS NOMADA FROM WISCONSIN. 



BY T. D. A. COCKtRELL, BOULDER, COLO. 



Nomada Graenicheri, n. sp. — ?. Length, about loi^ mm.; black, 

 wiih bright lemon-yellow markings, the only red is on base of antennre, 

 legs, and a little on mandibles ; mandibles simple ; anterior coxae without 

 spines ; basal nervure meeting transverso-medial ; third antennal joint 

 slightly longer than fourth. This is a Xanthidiuin with the face black in 

 the middle and with yellow lateral marks, like the European N. succitida. 

 It has the strongest possible superficial resemblance to N.modesta, but in 

 addition to the absence of spines on the coxae, it differs thus : labrum 

 dark, with a transverse yellow spot anteriorly ; clypeus with a yellow mark 

 on each side, pointed mesad ; supraclypeal area with two minute yellow 

 spots ; lateral face- marks extending nearly to summits of eyes, obliquely 

 truncate at end, and concave opposite the antennas ; mesothorax 

 dull, coarsely but extremely closely punctured ; metathorax wholly 

 black ; legs with a good deal of yellew, anterior and hind coxae marked 

 with yellow, the later copiously ; all the femora behind, and the anterior 

 and hind tibiae behind, strongly blackened ; all the tibiae with yellow, the 

 hind ones largely yellow, in front with a black spot, shading above into a 

 rufous cloud, on the apical half; basal joint of hind tarsi dark, practically 

 black on outer side, with a short yellow stripe posteriorly ; abdomen 

 narrower, and not so shiny ; venter with broad yellow bands on the second 

 and third segments, and a good deal of yellow on the third. The first 

 three joints of the antennas are mainly red, the rest black ; posterior orbits 

 with a narrow yellow stripe ; upper border of prolhorax, tubercles, trans- 

 verse mark on pleura, two large spots on scutellum, and a stripe on post- 

 scutellum, as well as five continuous bands on abdomen, all yellow. 

 Tegulte largely yellow ; wings dusky, stigma dark ferruginous, nervures 

 fuscous. 



Milwaukee, Wisconsin, Aug. i6, 1903. (Dr. S. Graenicher.)* 

 Nomada (XantJiidinin) pseudops, n. sp. — - 9 • Length, about 9 mm.; 

 red, with black and yellow markings ; basal nervure meeting transverso- 

 medial on the basal side ; third antennal joint conspicuously shorter than 

 fourth. Head broad, facial quadrangle about square, somewhat broad- 

 ened above ; labrum and under side of head with rather abundant white 

 hair, face with less ; cheeks with the anterior half red and the posterior 



*Dr. Graenicher writes that iV. Graenicheri is probably parasitic on one of the 

 late summer species oi Andrena, as it occurs with them on Helianthiis spp. 



JMaj-, 190^. 



