1903.] NATURAL SCIENCES OF PHILADELPHIA. 599 



Stripe, but that on metathorax merely indicated on lower part; abdo- 

 men very broad; hardly any black at base of first segment; second 

 with a small round yellow spot on each side ; first ventral segment with 

 a suffused black fish-tail mark; legs red, middle and hind femora more 

 or less black at base beneath; first joint of hind tarsi blackened. 



Hah. — Washington State (further particulars imknown), one in 

 Coll. of Acad. Nat. Sci. Phila. 



Nomada physura, sp. n. 



d^. — Length 9 mm. ; head and thorax black, very densely punctured, 

 hairy, the dorsal hairs orange-ferruginous, the others white; facial 

 quadrangle broader than long, especially above, the orbits conspicu- 

 ously converging below; mandibles (except tips), labrura, clypeus, and 

 lateral face-marks (narrow, and ending in a very fine point about level 

 of antennse), lemon-yellow; antennae long, third joint considerably 

 shorter than fourth; scape stout but hardly swollen, hairy, reddish- 

 yellow in front and black behind; flagellum bright ferruginous, basal 

 half blackish above ; upper margin of prothorax, spot on anterior part 

 of plema, tubercles, tegulse and scutellum, bright ferruginous; tegul* 

 strongly punctured; wings fairly clear, dusky at apex, nervures dark 

 brown, stigma ferruginous ; second and third submarginal cells broad ; 

 basal nervure a moderate distance basad of transverso-medial ; legs 

 bright red, coxae largel}'" black; front and middle femora at base be- 

 neath, and hind femora beneath and behind except apex, black ; spurs 

 light ferruginous; abdomen narrow-fusiform, bright red; basal half of 

 first segment black; apical margin of first four segments very narrowly 

 blackish; second and third segments with rounded lateral yellow spots, 

 those on second much the largest; apical plate narrow, truncate, 

 feebly notched; A^enter bright orange-ferruginous, with the base black 

 and foiu- narrow blackish transverse bands. 



Hah. — "Nevada"; no other particulars known. One in Coll. Acad. 

 Nat. Sci. Phila. It does not seem probable that this is the male of 

 N. rhodalis. 

 Nomada schwarzi, sp. n. 



cJ^. — Length 8^ mm.; allied to hella and cuneata, but distinguished 

 by the characters given in the table. Antennae bright red, scape and 

 first four joints of flagellum partly black above; mesothorax verj^ 

 coarsely punctured, with the lateral margins and two stripes on disk, 

 dark dull red; scutellum and postscutellum rather bright red; pleura 

 with a red spot in front, and dot beneath wings; tubercles, tegulae 

 and narrow upper border of prothorax red; legs red, blackened basally; 

 wings clear, with clouded apex; stigma dark reddish-brown; basal 



