Descriptions and RecorJs of Bees. 7G3 



LXXXIX. — Deacrlplions and Records of Bees. — XL. 

 By T. D. A. CocKEKELL, University of Colorado. 



Alcidaniea h^pocrila (Cockerell). 



Osmia ht/pocrifa, Ckll., was described from a single fenaale 

 taken at Bonhler, Colorado. The raii<i;e of the species is 

 very greatly extended by a female taken by Professor C. F. 

 Baker at Clareinont, California. In the collection of 

 Pomona College is a male obtained at Durango, Coloraflo, 

 May 21, 1899 [Oslnr). The discovery of the male makes it 

 necessary to refer the insect to Alciduim'a, though it is an 

 aberrant meml)er of that genus. 



(^ . — Length about 10^^ mm. 



Similar to the fem:de in colour and form, except for tin 

 usual sexual characters ; cheeks, posterior part of thorax at 

 sides, and abdomen above beyond second segment with 

 black hair; face and front with long erect white hair ; scape 

 long and curved, not much thickened; flagellum long and 

 slender, faintly brownish beneath excej)t at base, last ioint 

 bent aiul sharply pointed ; sixth abdominal segment with a 

 rather short sharp median apical tooth (from which proceeds 

 upwards a delicate keel) and on each side a broader tooth ; 

 seventh segment triangular, with a small truncate apical 

 tooth, marked by a notch on each side ; venter with short 

 black hair, hind margin of first segment straight, of second 

 l)roduced to a lobe ; hair of legs mainly black, but dull 

 white on anterior legs behind, and reddish on inner side of 

 tarsi. The hair of the thorax above is long and creamy 

 white. 



Easily known from A. uvulalis, CklL, by the absence of 

 the large projection on venter of abdomen ; known from 

 A. hiscutdUe, CklL, by the colour of the pubescence and the 

 total absence of hair-bands on the abdomen. 



Alcidamea simplex (Cresson). 

 Fedor, Texas {Birkmann) . Pomona College collection. 



Hoplitis sambuci, Titus. 



Claremont, California (Baker). New to California. 



The female is very like tliat of H. mescalerium, CklL, but 

 has black spurs ; the head larger, especially in the occipital 

 region, and the vertex and disc of mesothorax more closely 

 punctured. 



