155 



Clypeus, suprach'peal area, and sides of face opaque, irregularly longi- 

 tudinally lineolate or striolate with indications of sparse, shallow punc- 

 tures; front and vertex a little shining, finely and strongly discretely 

 punctured; mesonotum similarly but more shallowly punctured, the sur- 

 face between the punctures tessellate or lineolate ; mesopleura similar ; 

 scutellum similar, a little more sparsely punctured ; metanotum irregularly 

 lineolate and definitely sparsely punctured ; area of propodeum strongly 

 reticulate basally more or less chartaceous apically, sides and posterior 

 face shagreene4, posterior face angulate at the sides. 



First tergite highly polished and shining, with sparse, fine punctures 

 rather regularly disposed ; second and following a little less shining from 

 the fine scattered pubescence and a transverse microscopic lineolation. 

 Tergites 1-3 a little contracted at apex and with a slight trace of apical 

 interrupted hair bands. Sternites transversely lineolate tessellate. 



A rather elongate little species, the head a little longer than wide, 

 eyes feebly convergent below. The recurrent nervures interstitial or 

 nearly so. 



9 . Length 5 mm. ; wing 4 mm. 



Described from one 9 specimen collected at Karuizawa 

 September 1913. 



Type in the author's collection. 



Hylaeus monticola n. sp. 



5 . Larger species, the face marks in the type triangular not reaching 

 above the level of the lower margin of the antennal pit and not filling- 

 the sides of the face, tegulae black, the punctures of the mesonotum 

 closer and much deeper, the metanotum is rough surfaced and the punc- 

 tures closer but less evident, the markings of the anterior and middle 

 tibiae are greatly reduced ; the sculpture of the propodeal area inclines 

 to be striate, longitudinally carinate, the puncturing of the first tergite 

 is absent and this is microscopically transversely lineolate. The wings 

 are yellowish hyaline. The head is shorter and the eyes more conver- 

 gent. 



$ . Line on the anterior base of mandibles, clypeus except narrow 

 apical line and sutures very finely, sides of face obliquely truncate 

 above from the middle of the supraclypeal area, the upper margin 

 arcuately emarginate opposite the antennal sockets, the angle against 

 the eye margin not reaching above the middle of the antennal 

 sockets, supraclypeal area notched above, stripe on scape in front, 

 small spot on tegulae, suffused spot on anterior femora in front 

 and at the knee, on anterior tibiae in front, spot on middle tibiae on 

 exterior base, basal 3/4 of middle and hind basitarsi, and basal one-third 

 of hind tibiae sulfur yellow ; flagellum pale brownish beneath, tarsi other- 

 wise brownish. 



