151 



Hylaeus niger n. sp. 



2 Entirely without yellow coloration, black, calcaria pale, tarsi brown- 

 ish. Head elongate. Clypeus and sides of face longitudinally lineolate 

 with sparse shallow punctures, vertex more densely, deeply and finely 

 punctured ; mesonotum more finely punctate ; mesopleura a little shining 

 more sparsely punctate, scutellum a little shining, sparsely punctured; 

 metanotum with the area rough chartaceous basally, smooth and shining 

 apically, sides and posterior face very shallowly punctate. 



Tergites rather highly polished but not very highly shining, the minute 

 pilosity somewhat obscuring the reflections. Tergites not contracted, 

 only a very faint trace of apical hair bands. Sternites transversely lineo- 

 late with irregular minute punctures from which the hairs arise. 



Wings subhyaline, neuration brownish, recurrent nervures interstitial. 



Form slender, abdomen elongate, eyes slightly converging below, col- 

 lar rounded above, not narrowed or sub-interrupted in the middle, supra- 

 clypeal area contracted in the middle, expanded and elevated above and 

 bearing a sulcus which continues a short distance on the front. 



Length 7 mm. ; wing 5 mm. 



Described from two 9 collected at Chiiizenji (iOOO-nOOO 

 ft.) Julj-August 1913. 



Type and paratype in the author's collection. 



Hylaeus nipponicus n. sp. 



9 Head entirely black. Propodeum with the basal area well defined 

 coarsely irregularly reticulately, the posterior face bounded by carinae 

 except where the apex of the area extends over upon it, basolateral areas 

 well defined by carinae. 



Black; spot on tubercles, one on the tegulae, front and middle knees 

 and basal half of hind tibiae yellow, calcaria pale, flagellum brownish 

 red beneath, wings brownish hyaline, the nervures brownish. 



Clypeus with the surface opaque irregularly longitudinally lineolate 

 with faint, shallow scattered punctures, supraclypeal area similarly but 

 more regularly lineolate, sides of face similar but the lineolations in- 

 creased to striations against the eyes ; vertex and front somewhat shining 

 strongly and discretely punctate ; occiput transversely lineolate or striate ; 

 mesonotum similar to the front, the parapsidal and median lines well indi- 

 cated but not impressed ; scutellum similar ; mesopleura similarly but 

 more coarsely punctured, somewhat striate above ; sides and posterior 

 face of propodeum chartaceous or finely rugulose. 



First tergite highly polished and shining with a few widely scattered, 

 minute punctures, the remaining tergites less highly polished and the re- 

 flections broken by the minute pubescence; tergites 1-3 but very little 

 contracted ; sternites transversely lineolate, more definitely punctured. 



