Dec, 1921 Bulletin of the Brooklyn Entomological Society 113 



margin of fourth abdominal notum with two definite rows of 

 bristles, the anterior row with the stronger bristles ; genital 

 segments of dull orange ground color with darker pollinose 

 areas; vestiture of second segment the longer; first segment 

 much broader than second, latter quite shallow and with its 

 distal surface longer than its proximal portion, anal area 

 extended back toward anterior edge of segment as a long, 

 narrow band of membrane ; forceps prong with greatly ex- 

 panded base, distal portion bare, slender, in profile bent for- 

 ward at right angle to base, then recurved, tip abruptly bent 

 forward beak-like ; from rear prongs beyond bases first di- 

 vergent, then approximated leaving aperture ; in profile distal 

 part of forceps concealed by expanded portion of accessory 

 plate ; latter very large with smaller, hollow, proximal, stem- 

 like, basal portion that opens on interior (opening not easily 

 seen) and with greatly expanded distal portion that bears a 

 prominent fringe of long, dull orange, coarse flexible " hairs." 



Female. — Has essential non-secondary sexual characters of 



male. Third antennal segment unusually large and broad. 



First genital notum of normal form and of brownish color. 



Described from 12 male and 3 female specimens. 



Range. — United States: Arizona — S. Catalina Mts., Sabina 



Basin, Aug. 18, 24, 25, 26, 28 (allotype), Sept. 6, 8 (holotype), 



14, 21 (11 c^, 3 $), 4,000 ft. (C. H. T. Townsend). Mexico,^ 



Guanajuato (i c^), (A. Duges). 



Sabinata arizonica n. sp. Figures 6 to 9. 



Holotype (male) : U. S. N. M. Length: 10 to li mm, 

 Male. — Paraf rontals, genae and transverse impressions sil- 

 very gray ; third antennal segment at least twice length of 

 second; gena with group (not row) of slender bristles above 

 transverse impression near lower eye orbit ; lateral verticals 

 dififerentiated, but weak: only third vein with biistles; ante- 

 rior tibia without even suggestion of a beard; prescutellar 

 acrostichals fairly well developed ; at least four pairs of scutel- 

 lar marginals, three of them near apex; marginal bristles of 

 fourth abdominal notum only appearing to be in two rows 

 laterally ; genital segment dull orange, first whitish or yel- 

 lowish pollinose posteriorly, vestiture of first about length of 

 that of second ; latter much the smaller, anal area with taper- 

 ing extension toward anterior margin of segment; forceps 

 prong with greatly expanded base, in profile distal portion 

 bent at right angle to base, tip expanded, seen from rear 

 distal portion of each prong tapers to expanded tip and has 



