108 
Psyche 
[April 
minute indistinct punctures, closer posteriorly, surface rather 
shiny, basal triangle tessellate; tegulse ferruginous, yellowish in 
front, rather closely punctured, the punctures small but distinct; 
wings subhyaline, clouded apically, nervures piceous to brownish, 
second recurrent nervure entering second submarginal cell slight- 
ly nearer apex than first does to base, but both rather distant; 
legs black, white pubescent, yellowish on tarsi beneath; middle 
metatarsi almost as broad as the tibiae, densely yellowish-white 
pubescent without; hind metatarsi almost as broad as the tibiae 
also; spurs pale yellow; claws pale ferruginous basally, some- 
what deeper red apically, basal teeth distinct. 
Abdomen ovoid, shining; segments 1 and 2 entirely white 
pubescent, and segment 3 narrowly white pubescent at base; 
segments 3-5 with rather long erect black pubescence on discs; 
segments 1-5 with dense, entire, white, apical fasciae, very broad 
on the apical segments, narrow on the first two; punctures fine, 
close on basal segments, very sparse on the fifth which is highly 
polished ; segment 6 rounded apically and straight at the sides in 
dorsal view, straight in profile, shining, finely and rather closely 
punctured, with white appressed pubescence which is dense 
apically, thinning out basally, and with numerous long, erect, 
stiff black hairs; scopa white with a very faint yellowish tinge, 
black on segment 6 and on the apex of segment 5 medially. 
Length 12 mm. 
Type: Female (Type No. 15708, Mus. Comp. Zool.); Alta 
Meadow, California, altitude 9000 ft., Aug. 23, 1917 (W. M. 
Wheeler, collector). Paratypes: 4 females, topotypical; 2 fe- 
males, Calgary, Alberta, Aug. 26, 1925 (Geo. Salt, collector). 
This is very close to M. chrysothamni Ckll., but in the latter 
the punctures of the mesonotum are much closer and there are 
no black hairs on the scutellum. The fifth abdominal segment is 
much more closely punctured also than in this species. Both of 
the species described here may be separated from chrysothamni 
by the following key: 
1. Clypeus almost impunctate in the center, with very 
minute widely scattered punctures, but deeply punc- 
tate at sides austinensis 
Clypeus closely and strongly punctured throughout. ... 2. 
