A New Bee. Cockerell. 0 
A New Bee from California. 
By T. D. À. Cockerell. 
Anthrena Knuthiana, sp. n. — ©. Length about 9 mm., 
black, with greyish-white pubescence, tinged with ochreous on 
dorsum ; head as broad as thorax, facial quadrangle broader 
than long; face quite hairy ; hair of vertex long and directed 
forwards, not at all mixed with black; antennae black, fla- 
sellum very faintly brownish beneath towards the tip; vertex 
minutely roughened ; elypeus smooth and shining, with rather 
dense large punetures; process of labrum broad, broadly 
truneate, the truncation thickened and slıghtly concave; 
mesothorax minutely tessellate, with distinct but not very 
dense irregularly-placed punctures ; basal area of metathorax 
triangular, poorly defined, granular, with only a faint indica- 
tion of longitudinal plicae basally in the middle line; tegulae 
shining piceous ; wings grayish-hyaline, nervures fuscous, 
stigma pale brown with a dark brown margin; legs black, 
even to the tarsi, with dull white hair, slightly yellowish on 
the inner sides of the basal joints of the tarsı; claws ferru- 
ginous; abdomen long-oval, rather flat, mieroscopically tessellate, 
with also very minute inconspicuous punctures ; white apical 
hair-bands on segments 2 to 4, that on 2 wanting for the 
middle third, that on 3 somewhat interrupted in the middle, 
that on 4 entire; apex with soot-colored hair. 
d. Differs in the usual manner; rather smaller, with 
the abdomen narrower and the hair-bands thin and mainly 
eonfined to the sides; antennae long, wholly black; face 
wholly black ; legs, inclusive tarsi, black ; stigma darker. 
Hab. — Berkeley, California, June 10, 1899, 1 ©, 2 7, 
the latter on flowers of Daucus carota, Collected by Dr. 
Paul Knuth, and sent to me by Mr. J. D. Alfken. Dedicated 
to the memory of its collector, whose death, in the midst of 
the most fruitful part of his labors, is greatly to be deplored, 
The species is allied to A. segregans Ckll., from New Mexico, 
but is easily separated by the non-tessellate elypeus. It is 
also rather near to A. apacheorum, Ckll. In my table of 
Andrena in Bull. Denison Lab., it runs to À. electrica, but 
is much smaller than that species, with the process of the 
labrum quite different, In Robertson’s table in Trans. Am, 
Ent. Soc. it runs to A: salicis, but it is quite distinet from 
that species. 
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