1916.] NATURAL SCIENCES OF PHILADELPHIA. 



hands or patches; head broad; mandibles ferruginous, dusky apically 

 and black at extreme base; flagellum clear ferruginous beneath; 

 mesothorax moderately shining, scutellum more polished; area of 

 metathorax semilunar, densely irregularly wrinkled, the obtuse 

 margin shining; knees, tibiae and tarsi ferruginous, the tibia with 

 obscure dusky suffusion; tegulae amber color; wings hyaline, 

 stigma and nervures pale testaceous; first r. n. meeting second t. c; 

 outer r. n. and t. c. colorless and very thin; abdomen broad, polished, 

 with very thin pubescence: hind margins of segments obscurely 

 reddish; caudal rima bright ferruginous; hair of venter long, but no1 

 curled to form a true scopa. Microscopical characters; clypeus 

 very sparsely punctured; front striate, with punctures between the 

 straiae; third antennal joint extremely short, fourth a little longer, 

 fifth still longer; mesothorax lineolate, with scattered punctures; 

 abdomen with extremely minute punctures, best developed on fir-t 

 segment; hind spur with one very large obtuse tooth (like the last 

 joint of a finger) and one very low rounded lamella. 



Hob.— Kalamunda, S. W. Australia, Mch. 14-Apl. 14, 1914 (R. E. 

 Turner; Brit. Museum). Allied to H. urbanus, but with the meso- 

 thorax quite differently colored. It may also be compared with 

 H. humilis, but is quite distinct. 



Halictus brazieri sp. n. 



cf . Length 11 mm. or slightly over; shining black, with scanty 

 dull white pubescence; hair on inner side of basitarsi and fringe of 

 caudal rima pale golden; outer side of tibiae with hair partly dark 

 fuscous; head ordinary, only moderately broad; mandibles black, 

 dark red at extreme tip; elypeus shining, with strong not dense 

 punctures, no median groove; front dull in middle, glistening at 

 sides; antennae pure black; mesothorax shining, with strong rather 

 sparse punctures of practically uniform size; scutellum with very 

 minute punctures, entirely different from those of mesothorax; 

 mesopleura coarsely striate; area of metathorax short, with fine 

 regular cross-striae, the basal middle with irregular rugae; sides of 

 area posteriorly bounded by conspicuous elevations; posterior 

 truncation strongly obliquely striate; hind spurs simple (micro- 

 scopically very briefly serrulate); tegula? black, a little reddish in 

 middle: wings slightly brownish, stigma dull ferruginous, nervures 

 fuscous, outer r. n. and t. c. much weakened; first r. n. joining end 

 of second s. m.; abdomen shining, with extremely minute punctur 

 no hair-bands or patches, but third and fourth segments, and base of 

 first, with thin pale glittering hair; hair at apex fuscous; venter 

 with short Miff hair. The wings are unusually short. 



