Pomona College, Clareinont, California 47 
segment depressed about a fourth; hair at apex retldish-bhick ; ven- 
tral segments with long fringes of stiff black hairs. 
Ildbiliil: Claremont, California {Baker; Pomona coll. 199). 
This may be compared with ./. )iiijirrima Casad, from which it is 
reaiiily known by the non-punctate abdomen and other characters. 
A related but iriuch larger species of the Los Angeles region is 
J. suhlristis Ckll. This, according to Mr. Viereck, is a synonym 
of J. iiigrii Prow, and the specimens in the National Museum 
labeled iiujra are this species. There is, however, some confusion, 
since Pro\-ancher's description indicates a smaller species (length 
.42 inch), with a smooth line in middle of clypeus (wholly wanting 
in siibtristis, but present in the much larger pertrislis Ckll.), wings 
smoky reddish (like prrlristis rather than siibtristis) , and abdomen 
o\al antl brilliantly polished. This indicates a species unknown to 
me. 
Judri'iia iiiiricoma Smith 
Claremont {Baker; Pomona coll. 197). Smaller than an Ore- 
gon specimen. A. Candida Sm. was also taken by Baker at Clare- 
mont (Pomona coll. 198). 
Andrena plana Viereck 
Claremont (Baker; Pomona coll. 212). This is a little larger 
than \'iereck's type, but is presumably his plana, having the very 
remarkable brownish velvet-like hair on thorax above, and the dull 
impunctate clypeus. The second abdominal segment has no apical 
depression. Superficially the species resembles A. mitstelicolor 
\'icr., but It is easily separated by the thoracic hair. 
Andrena opacivenlris sp. n. 
9 Length about 10 mm.; black, with fulvous hair, bright fox- 
red on thorax above; face and front with much fulvous hair, so that 
the dull granular surface of the clypeus is difficult to see; mandibles 
black, with a red spot at extreme base; process of labrum narrow at 
end, minutely notched; facial foveas grayish-brown, about half as 
wide as distance between antenna and eye, tlifficult to see on account 
of the long o\ criapping hair; antenna' black, third joint 368 microns 
long, the next two together 384 microns; mesothorax and scutellum 
