^o-3-] PATTON ON ACULEATE HYMENOPTERA. 365 



ANTHOPIIILA. 



38. COLLETES AEMATA PattOIl, <?. 



Length 9""". Black; tlie pubescence white; space between eye and 

 mandible less than the width of the eye; labrum with a central enclosed 

 pit and two or three less distinct pits on each side of it ; clyiieus con- 

 fluently punctured, at the apex polished, and with irregular scattered 

 punctures : vertex densely punctured, opahe. Prothoracic spine promi- 

 nent, meso thorax deeply punctured, the disk shining and more sparsely 

 punctured, anteriorly a faintly imi)ressed median line fi-ee from punc- 

 tures. Base of the metathorax with a transverse series of rcgidar 

 reticulations, the posterior face coarsely and irregularly reticulated, 

 shining. Calcaria testaceous, ax)ical joints of tarsi rufo-piceous, the tips 

 of the joints with golden pubescence. Wings hyaline, the uervures 

 testaceous, postcostal nervure black, second submarginal cell narrowed 

 more than one-half towards the marginal cell. Abdomen polished, 

 densely and finely punctured, the base of first segment without punc- 

 tures; first segment thinly i)ubescent, the remaining segments with 

 short scattered pubescence and all the segments except the last with 

 an even apical fascia of apjjressed pubescence ; the fasciae on the ventral 

 segments uninterrupted. 



Agrees very closely in all respects with the male of C. armata from 

 Connecticut, but it may be readily distinguished by the form of the 

 second subma,rginalcell and the color of the wing-nervures. The differ- 

 ence in the form of the submarginal cell, however, is likely to be a sport, 

 as differences in the venation, although presenting good generic charac- 

 ters, are rarely available for the separation of species. In C. consors 

 Cress., the second submarginal cell varies in form. 



39. AUGOCHLORA HUMERALTS n. Sp.,<? $. 



5, Length 8™°^ to lO"'". Golden or blue green ; thinly clothed with 

 white pubescence ; head very closely and finely punctured, with large 

 deep punctures on the clypeus ; flagellum beneath, anterior margin of 

 clypeus, the labrum, and mandibles dark rufo-piceous. Pubescence on 

 the thorax more dense behind the tubercles, behind the wings, and be- 

 tween the scutellum and postscutellura ; thorax closely punctured, the 

 punctures on the sides of the disk very fine and on the sides of the 

 metathorax more shallow ; angles of prothorax very sharp and promi- 

 nent, connected with the prominent tubercles by a sharp sinuous ridge; 

 base of metathorax finely roughened or granulated, not distinctly en- 

 closed ; posterior truncation shining, very sparsely punctured, median 

 groove deep, lateral ridges sharp. Legs golden-green, black beneath ; 

 tarsi and posterior tibiffi piceous, sometimes with a testaceous or a blue 

 tinge ; posterior legs with a dense pale pubescence. Wings hyaline, 

 nervures and stigma testaceous, tegulse with a smooth piceous spot 

 Abdomen covered with very close and fine punctures of different sizes, 



