1392.] Entomology. 269 



fectly defined, but appearing triangular, truncate or semicircular: 

 wings fusco-hyaline, second subraarginal cell narrow, oervures fuscous, 

 tegulse black ; abdomen shining, impunctate. Length 7 nun. 



One $ specimen, taken in Southern Illinois, An »■ 11 In Mr (' V 

 Hart. 



3. Halictus floridanus. 9 — Head, thorax and abdomen green- 

 ish, the legs blackish; above the pubescence is thin and vi llnui-h, 

 beneath it is white; face long. Hat. clvpeus stmnglv produced, mandi- 

 bles rufo-piceus at tips; disc of mesothorax not inning, minutely 

 roughened, closely and finely punctured; metathorax truncate, the 

 disc covered with fine wrinkles ; wings hyaline, nervures and teguhc 

 testaceous; knees and apical joints of tarsi testaceous; abdomen of 

 same color as thorax, more shining, minutely punctured ; cloth, d with 

 pale pubescence except on discs of first and second segments, the pubes- 

 cence not concealing the surface, as in the next species; apical margins 

 of segments testaceous, which with the pubescence sometimes gives the 

 abdomen a subfasciate appearance, reminding one of H. fiudatut 

 Length 6-7 mm. 



Florida: 16 9 specimens, taken at Inverness from March 7 to 20, on 

 flowers of Lupinus villosus and Ceanothns microjihyllu.*. It visits the 

 former for stray pollen, the latter for honey and pollen. 



It resembles H. fasriatm Nyl. (= H. fiavipes Thompson) in color 

 and in the sculpture of the disc of metathorax. It is smaller, bas a 

 longer, flatter face, the mesothorax more finely roughened and there- 

 fore less shining, the abdomen without regular apical fascia?, etc. 



4. Halictus pruinosus. $ —Head, thorax and abdomen green. 

 clothed with a thin hoary pubescence; face long, finely punctured, 

 clypeus strongly produced ; mandibles, except base, ferruginous, flag- 

 ellum testaceous beneath ; mesothorax minutely roughened, not shin- 

 ing, closely and rather finely punctured; disc of metathorax with 

 irregular rugie running from base but hardly reaching apex, which is 

 smooth and somewhat elevated; wings whitish, hyaline, nervures 

 whitish, tegula> pale testaceous ; abdomen shining, almost impunctate, 

 narrow apical margins of segments pale testaceous, all the segments 

 except discs of first and second, densely clothed with hoary pubes- 

 cence. Length 6 mm. 



£. —Closely resembles the female; clypeus strongly produced, disc 

 of metathorax rougher, abdomen also green, more punctured, shining, 

 with thin pubescence: arex ufclv,eu«. lahrum. riagellum beneath, 



