NO. 1777. ON JAPANESE SAWFLIE8—R0HWER. 113 



row, complete; sides of postocellar area punctiform; postocellar line 

 distinctly shorter than the ocellorbital hne; antennae slender, the 

 third and fourth joints subequal; thorax normal; stigma broadest 

 near base, tapering to apex; hypopygidium long and narrow, apex 

 nearly truncate angles rounded; gentalia stipes rounded at the apex. 

 Black; clypeus, labrum, tegulag, angles of pronotum, legs (the femora 

 and tibicne brownish) and genataha stipes pale, the body markings 

 yellow. Wings hyaline, iridescent; venation brown in part pale. 



Type-locality. — Hakone, Japan. One male collected by Mr. A. 

 Koebele. 



Type.— Cat. No. 13329, U.S.N.M. 



DOLERUS INSULICOLA, new species. 



Very like ohscurus Marlatt, but the clypeus is squarely emarginate, 

 not with a U-shaped emargination, the saw is without well-defined 

 transverse folds and the teeth are not as small or numerous. 



Female. — Length 8 mm. Labrum impunctate; clypeus deeply 

 squarely emarginate, lobes triangular, obtuse; head emarginate pos- 

 teriorly; front closely granular, vertex with large punctures; anten- 

 nal furrows complete; vertex carinated; third antennal joint longer 

 than the fourth ; dorsulum, scutellum and tegulae with close distinct 

 I)unctures; scutellar appendage large, pointed, with oblique stride; 

 mesopleurse granular with a tendency of reticulation; basal plates 

 impunctate; sheath large, obliquely truncate; saw slender, without 

 transverse ridges, teeth sharp and pointing basally. Black; clypeal 

 lobes, pronotum, tegulae, trochanters, femora and most of tibiae, dark 

 rufous; head and thorax with short gray hairs; wings hyaline, iri- 

 descent ; venation except the extreme base of stigma, black. 



Type-locality. —Wakussi, Japan. Three females collected by Mr. T. 

 Fukai. 



Type.— Cat. No. L3331, U.S.N.M. 



One of tlie paratypes has the clypeus entirely black, only part of 

 the pronotum rufous and the sculpture of the dorsulum is not so 

 dense. 



RHOGAGASTER NIPPONICA, new name. 



Tenthredo picta Motschulsky, Bull. Soc. Imp. Natur. de Moscow, 1866, p. 182. Not 

 Klug, 1814. 



What has been determined as Motschulsky' s species is different 

 from both R. varipes (Kirby) and R. viridis (Linnteus). These three 

 similarly colored species may be separated thus: 



Labrum longer than wide varipes (Kirby). 



Labrum much wider than long 1. 



1. Postocellar area carinated, quadrate nipponica Rohwer. 



Postocellar area not carinated, rectangular viridis (Linneeus). 



Proc.N.M. vol.39— 10 10 



