BEES. 



less yellowish and his antennae are noticeably longer than 

 the females. In Tetralonia (maxillary palpi 6- jointed), 

 Xenoglossa (max. palpi 5- jointed; tarsal claws cleft), and 

 Cemolobus (max. palpi 5-jointed; claws toothed but not 

 cleft) the lower anterior portion of the orbits have a large, 

 somewhat triangular, space; the clypeus is remote from 

 the eyes. T. atriventris, X. pruinosa (the name referring 

 to the frosted bands on the abdomen; Plate XCIII), 

 and C. i pomace are the Northeastern species. In Melissodes 

 the orbital-malar space is small; clypeus nearly touching 

 the eyes; maxillary palpi usually 4-jointed. There are 

 numerous species. 



The habits of all Anthophoridae are much alike: burrows 

 are made in the ground and stocked with a paste of pollen 

 and honey for larval food. 



PROSOPID^E 



These small bees, black with yellow chitinous markings, 

 have two submarginal cells, the second of which is squarish, 

 slightly if any longer than high, and conspicuously shorter 

 than the first ; the first recurrent vein often meets the first 

 transverse cubital; the marginal cell is elongate and not 

 square-cut at the tip; tongue flat and bilobed; face pitted. 

 Prosopis (Plate XCIII) is our only genus. Perhaps we 

 should use the names Hylcens and Hylasidae. The Masked 

 Bees have been accused of being lazy because they are 

 even less hairy than such confirmed cuckoos as Nomada. 

 However, their lack of hair may be correlated with the 

 fact that, unlike other industrious bees, they do not 

 carry pollen on the outside of their bodies. "They first 

 eat it and then, having reached their nest, regurgitate it, 

 mixing it with honey, to prepare food for the babies they 

 never live to see. They nest in raspberry stalks and the 

 like. 



COLLETID.E 



The first recurrent nervure is received by the second 

 of the three submarginal cells; first discoidal cell is not 

 as long or scarcely longer than the marginal; stigma well 



445 



