Vol. XXV] ENTOMOLOGICAL NEWS. 155 



Halictus proangularis sp. nov. 



9 Length 6.5 mm. Head, thorax' a.nd abdomen rather dark, uniform 

 greenish blue, abdomen more shiny. 



Head longer than wide, clypeus produced for half its length beyond 

 the eyes, the margin black and closely punctured. Face rather finely and 

 closely punctured ; the narrow margin of the lateral area of the face, 

 along the supraclypeal area and clypeus shiny and unsculptured. An- 

 tennae dark brown, cheeks narrow. 



Tubercles pointed and the antero-lateral angles of the pronotum 

 sharply projected, forming two broad angles on each side, somewhat 

 curved forward. Mesonotum finely lineolate and rather finely punc- 

 tured, the punctures rather close and crowded except along the median 

 groove and at its anterior end. Metathorax very short, the entire sur- 

 face closely lineolate, basal area narrow and crescent-shaped, slanting 

 sharply downward, with a low narrow rim extending well laterally, and 

 numerous weak, simple plicae that extend over the rim at the sides. 

 Tegulae pale brown, the anterior half with very fine punctures and rather 

 long yellowish hair. 



Wings dusky and pale brownish, stigma and nervures dark brown. 



Legs light brown, somewhat paler towards the tarsi ; covered with 

 rather dense, rich ochraceous hairs. 



Abdomen broad and blunt at one end, the first segment almost 

 impunctate and very shiny, the rest of the surface finely punctured, 

 margins of the segments not testaceous. Segments three to five and 

 the sides of segment two with a thin, pale buffy pubescence. 



Pubescence scant and ochraceous, a little paler on the face and 

 lower part of the pleurae. 



Habitat. Bayamon, Porto Rico, I (type), January, 1899 

 (August Busck). In U. S. National Museum. 



The relationships of this species are not clear. The sharp 

 tubercles and antero-lateral angles of the prothorax separate 

 it from all of the other North American green Halictus. The 

 uniform greenish blue color with the dark wings gives it a 

 superficial resemblance to H. aqnilae Ckll., which, however, is 

 a much larger species, with a short face and a very different 

 metathorax. 



Length of the Pupal Stage of Adalia bipunctata Linn. (Col.) 



Two larvae of this species pupating on June 19, 1900, at Annapolis, 

 Maryland, emerged five and a half days later. Another pupating 

 May 27, 1900, emerged early in the morning of June 3, or after 

 six and two-thirds days. When disturbed, the pupa raises itself very 

 quickly to a perpendicular position. A. A. GIRAUI/T. 



