ART. 6 HALICTINE BEES FROM SIBERIA — COCKERELL 5 



HALICTUS LUTZENKOI, new species 



Male. — Length about 8 mm., anterior wing 5.7 mm.; black, with 

 white hair, long and pale fulvous in region of scutellum ; head broad, 

 circular seen from in front; cheeks moderately swollen, rounded; 

 face and front densely covered with white hair; clypeus not much 

 produced, with an apical transverse yellowish-white mark; antennae 

 long, entirely black, flagellar joints submoniliform ; mesothorax and 

 scutellum polished, with distinct but not very close punctures; area 

 of metathorax shining, with strong longitudinal rugae; posterior 

 truncation sharply defined, and with conspicuous transverse rugae; 

 tegulae large, very dark brown with broad whitish margins; wings 

 grayish hyaline, stigma and nervures dusky yellowish ; second cubital 

 cell narrow, hardly half as broad as third, receiving recurrent ner- 

 vure a little before end; outer nervures not distinctly weakened; legs 

 entirely black, with light hair, spurs pale ferruginous; abdomen 

 shining, finely punctured, conspicuous and entire white basal hair- 

 bands on segments 2 to 4 ; venter of abdomen with a patch of pale red 

 hair subapically. 



Okeanskaja, Siberia, August 18, 1 male (Cockerell). 



Type.— C2it. No. 27341, U.S.N.M. 



Apparently nearest to H. zonulus Smith, but differing sufficiently 

 in sculpture and venation to be separable. In Crawford's table of 

 North American species it runs close to H. similis Smith. I had sup- 

 posed H. similis to be inseparable from H. leucosonius, but the male, 

 as determined by Crawford, is certainly not leucozonius. Crawford 

 himself remarks that it is what I regard as II. discus Smith. 



Named after the able director of the Commercial School at Vladi- 

 vostok, who has done much to stimulate scientific interest among 

 his pupils. 



HALICTUS WITTENBOURGI. new species 



Male. — Length about 8 mm., anterior wing 6.7 mm. ; black with 

 white hair, on head and thorax above distinctly tinged with yellow ; 

 head broad, but face rather narrow, and clypeus strongly produced, 

 its apical margin with a broad pale yellow band; cheeks flattened, 

 not prominent; antennae black, reaching quite to end of scutellum; 

 mesothorax and scutellum dull and rugosopunctate, the mesothorax 

 anteriorly rather densely clothed with short pale hair, on a surface 

 which is punctured as closely as possible; area of metathorax poorly 

 defined, coarsely rugose; posterior truncation sharply defined, 

 strigato-rugose ; tegulae dull rufous, piceous at base; wings grayish- 

 hyaline, stigma and nervures reddish-brown, stigma ending more 

 obtusely than usual; second cubital cell broad, receiving recurrent 

 nervure near end, third not very much broader than second; abdo- 

 53653— 25t 2 



