8 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 68 



In the Amagu region, in July, the males had not begun to appear, 

 but in the southern part of the Province, in August, they were ap- 

 pearing in small numbers before we left. The females of the same 

 species probably emerged a little later, so that of five kinds of males 

 we have onlj^ the female for one. 



The small black species of Halictus collected in the Maritime 

 Province of Siberia, belonging to the subgenus Evylaeus Robertson, 

 are referable to two series, separated by the hind spur of the female. 



Group A, Hind spub of fbmale hind tibia with numeeocs (usually about six) rathbk 



SHORT OBLIQUE SPINES 



HALICTUS TRANSPOSITUS, new species 



Female. — Length nearly 6 mm., anterior wing 5 mm.; black, with 

 scanty grayish-white hair; hind margins of abdominal segments 

 rather broadly pale reddish ; abdomen without any conspicuous hair 

 bands or patches, but a little pale hair at lateral bases of second seg- 

 ment; head broad, approximately circular seen from in front; man- 

 dibles obscurely reddish subapically; clypeus shining, with strong 

 punctures; sides of face glistening, front dull; flagellum dull fer- 

 ruginous beneath except basally; thorax robust; mesothorax and 

 scutellum polished, distinctly but not very densely punctured; me- 

 dian depressed line on mesothorax distinct, but none on scutellum; 

 sides of thorax dull, except a shining area below the wings; area 

 of metathorax large, with fine but distinct longitudinal plicae, not 

 nearly reaching the apex ; posterior truncation with the sides sharply 

 margined only halfway up ; tegulae bright ferruginous ; wings dusky 

 hyaline : nervures pale testaceous ; stigma large, pale ruf o-testaceous ; 

 basal nervure a considerable distance from nervulus; second cubital 

 cell not very much narrower than third, receiving recurrent nervure 

 at apex; legs black, with pale hair, small joints of tarsi rufescent, 

 hind femora red at extreme apex ; abdomen broad, shining, the broad 

 hind margins of segments polished. Hind spur with at least six 

 short teeth or spines. 



Kongaus, Siberia, August, 1 female (Cockerell). 



Type.—Q,2ii. No. 2734.5, U.S.N.M. 



Related to H. intemiedius Schenck. U. semilucens Alfken is 

 readily separated by the dark-brown stigma. 



HALICTUS TUTIHENSIS, new species 



Female. — Length nearly 6 nmi., anterior wing 5 mm. ; black, with 

 veiy scanty whitish pubescence; hind margins of abdominal seg- 

 ments narrowly but distinctly rufescent; head broad; mandibles 

 with apical half dark rufous; clypeus shining and strongly punc- 

 tured; front slightly shining; flagellum with apical half obscurely 

 reddened beneath; mesothorax and scutellum polished, finely punc- 



