370 PROCEEDINGS OF THE ACADEMY OF [May, 



not concealing the shining surface; front dull except at sides, densely 

 punctured, with oblique (mainly transverse) wavy rugae above the 

 antenna?; a small shining space on each side of middle ocellus 

 anteriorly; antenna? slender, moderately long, the flagellum dull 

 reddish; length of antennal joints in microns, (1. = scape), 560, 

 (2.) 128, (3.) 144, (4.) 240; mesothorax polished and shining, sparsely 

 and finely punctured, median and parapsidal grooves distinct ; scutel- 

 lum shining, the disc impunctate; legs with pale hair; basitarsi 

 cream-colored at base, and a cream-colored spot at base of hind 

 femora; tegula? rufotestaceous with a pale yellowish mark; wings 

 hyaline, stigma and nervures ferruginous; stigma large; first r. n. 

 meeting second t. c; third s. m. large, broader above than second; 

 hind wing with four spines on costa much before origin of radial vein, 

 a group of four large hooks (close together) beginning at origin of 

 radial vein, and a group of three hooks a short distance beyond; 

 abdomen shining, very finely punctured, with a thin pruinose pubes- 

 cence, but no bands or spots; apex with white hair; a broad, rounded, 

 very obtuse red apical plate; venter not very hairy. 



Hab— Yarrawin, New South Wales, 1914. (W. W. Froggatt, 250.) 

 Related to H. spenceri, but easily separated by the color of the legs. 

 The red stigma and other characters separate it from H. dolichocerus 

 and H. hamatopus. 

 Halictus dolichocerus sp. n. 



cf . Length 5 to 6 mm., rather robust, with short broad abdomen; 

 head large, but not conspicuously so as in H. pachycephalias; pubes- 

 cence rather short, dull white; lateral bases of abdominal segments 

 2 to 4 with cuneiform patches of white tomentum; legs bright 

 ferruginous, blackened at base, anterior femora black except at apex, 

 middle and hind pair with less black; tibia? with a blackish patch. 

 Eyes rather strongly converging below; clypeus with a broad apical 

 band, which is angularly produced above in middle; face, and whole 

 of front, with rather dense white hair, partly concealing surface of 

 front; front dull; supraclypeal area polished and shining; antenna? 

 extremely long, dark, the fourth joint bright or obscure red beneath; 

 flagellum strongly crenulate beneath; mesothorax polished, finely and 

 not densely punctured; scutellum brilliantly shining, middle of disc 

 impunctate; area of metathorax crescentic, with weak plica?; margin 

 of area polished; tegula? rufotestaceous; wings hyaline, nervures 

 and stigma sepia; second s. m. variable; first r. n. joining second 

 t. c. or entering basal corner of third s. m.; third s. m. very large, 

 quadrate, sometimes longer than high; abdomen shining, very 



