222 Journal New ^'oRK Entomological Society, t^'o^- >^^^l- 



form a short, narrow rim which does not truncate the lateral plicae ; rugae 

 rather strong ; tcgulae testaceous ; wings hyaline, stigma pale, nervures dark 

 testaceous; legs dark brown, tarsi and knees a little lighter, reddish to dark 

 testaceous ; abdomen somewhat shiny, all of the segments except the first with 

 rather abundant, short, buffy pubescence ; pubescence on the legs somewhat 

 darker and more abundant, and that on the sides of the thorax paler and 

 longer. 



This species is quite similar to H. nytnpJialis Smith from Florida, 

 from which it is separated by the fuscous bands on the abdomen 

 and the finer punctures on the mesonotum of H. nymphalis. H. 

 graeuicheri also resembles H. tcsfaccus Robertson which however 

 lacks the short rim across the basal area of the metathorax. This 

 partial rim suggests the three species H. clematisellus Cockerell, H. 

 mesillcnsis Cockerell and H. vicrccki Crawford, which also have 

 yellow abdomens. These species may be distinguished by their abun- 

 dant pubescence, which is snow white in the first two and golden 

 yellow in the latter. 



Habitat. — Genoa, Vernon County, Wisconsin, i (=type) and i 

 cotype, July 13, 191 1 (Graenicher, Nos. 52738 and 53067). 



Halictus clarissimus new species. 



Female 5 mm. Head 'and thorax rather light, somewhat greenish blue ; 

 abdomen clear amber yellow, darker at the apex, the margins of the segments 

 yellow. Facial quadrangle about as broad as long, narrowed below ; eniar- 

 gination of the eye rather deeper than in most species of this genus ; clypeus 

 short, not extending below the eye ; clypeus and lateral areas of the face with 

 rather abundant white pubescence ; flagellum reddish brown near the tip ; 

 mesonotum shiny, the punctures very fine and scattered in the middle, more 

 crowded around and at the anterior end of the parapsidial grooves ; wings 

 clear, hyaline ; tegulae, stigma and nervures, except the costal, pale honey color ; 

 legs reddish brown, knees and tarsi, except the terminal joint, testaceous; disc 

 of the metathorax without a rim ; lateral areas of the metathorax full and 

 shiny, the basal area roughened, its plica; rather numerous, those in the 

 middle more or less rugose, the lateral ones straight and extending onto the 

 lateral areas; margin of the basal area of the metathorax rounded, shiny and 

 elevated across the middle; abdomen rather shiny but with numerous, very 

 fine, shallow punctures; pubescence thin and whitish, rather uniformly dis- 

 tributed over the abdomen and the sides of the thorax. 



This species is placed in a group with H. zcphyrus Smith although 

 the sculpture of the basal area of the metathorax is not in strict accord 

 with this grouping. H. clarissimus resembles H. pallidcllus Ellis 

 more than any other species. The short clypeus and broad facial 



