90 Bulletin of the Brooklyn Entomological Society Vol. XII 



fasciae at apices of segments very faint, distinguishable only laterally; 

 hairs on segments i and 2 very much longer than those on other segments ; 

 sixth ventral segment slightly reflexed apically but without lateral angles ; 

 seventh with a deep wedge-shaped notch in center of the median produced 

 portion; eighth very similar to that of erythrogastra, terminating in a long, 

 almost parallel-sided process, the apex of which is truncate or slightly 

 rounded; hypopygium somewhat similar to that of andrenoides, differing 

 in having the dorsal processes of the stipites broader, longer, and more 

 nearly truncate apically, and closely contiguous almost to their apices. 



Female. — Differs from the male in having the face entirely black, the 

 thoracic hairs bright fulvous, and the apices of the abdominal segments 

 each with a complete band of whitish hairs. 



Fovese broad, at upper extremity covering about four fifths of space 

 between eye and ocellus, pubescence tawny yellow, lower extremity of 

 f ovese below lower level of antennal insertion ; clypeus shagreened and 

 rather remotely and finely punctate except on lower median portion, cly- 

 peal structure as in male ; mandibles shorter and stouter than in male ; 

 malar space about one fifth as high as broad ; cheek broader than eye, 

 tapered below and without a distinct angle; basal flagellar joint sHghtly 

 shorter than 2 + 3. Thorax as in male ; metathoracic enclosure minutely 

 shagreened, basally irregularly granulose. Surface hairs stout, dense, and 

 upright, covered with closely appressed short branches and except under 

 a high magnification appearing simple. Abdomen as in male, the punctures 

 at bases of the upright hairs even less distinct, so that the surface appears 

 impunctat'e ; hairs on segments i and 2 long and upright ; fascia on seg- 

 ment I less distinct than on others ; pygidium truncate and slightly emar- 

 ginate at apex. Mid and hind metatarsi narrower than corresponding 

 tibiae; hind tibiae broad, of nearly an equal width on their apical three 

 fifths, gradually narrowed to base on remainder; tarsal claws bifid, the 

 inner tooth much shorter than outer. Greatest length of third submar- 

 ginal cell at least twice that of second; basal nervure distinctly distad of 

 transverse median. 



Length: male, 8.5-9.5 mm.; female, 11. 5-12.5 mm. 



Type locality, Fedor, Texas, March 13-24 (Birkmann). Para- 

 types, Trinity, Texas, March 20, 2 males on Salix (R. A. Cush- 

 man) ; Beaumont, Texas, March 18 (E. S. Tucker) ; Great Falls, 

 Maryland, April 21 (N. Banks) ; Maryland, near Plummers 

 Island, April 19, 21, 22, 7 males on flowers of Prunus (L. O. 

 Jackson, H. L. Viereck). 



The male of this species is separable from that of any de- 

 scribed species by the yellow clypeus and peculiar tooth-like pro- 

 jection of the posterior margin of cheek. The female resembles 

 in some respects mandihularis Robertson, but the stout, dense 



