760 MR. U. A. ELLIOTT ON THIl 



Habitat : Milne Bay (Micliolitz) ; Bismarck Archipelago 

 (Di'. Dahl) ; Borneo (Grabowsky). 



This species is distinguished from all others in this subgenus 

 by the long and narrow stigma ; from P. pygmceits Enderl, it 

 differs also in the longer basal flagellar joints and entirely hyaline 

 wings. 



Enderlein (/. c.) considers this species to be merely a dark 

 variety of P. clamellicus Westvv. The sculpture of the pronotum 

 is entirely different, the petiole and hind legs are black, the 

 characteristic white line on face is wanting, and the stigma is 

 longer and narrower. These points, taken in conjunction with 

 the different localities, appear to justify me in regarding them as 

 separate species. 



17. MALAYAINUS Cam. 



Stephanus inalayanus Cameron (6), p. 43, $ . 



5 . Frons closely and coarsely transrugose ; vertex arcuate 

 striate. Anterior frontal tubercle very large ; temples broad and 

 inflated. Second flagellar joint half as long again as first. 

 Pronotum striate at apex of basa.l fovea,; propleurse smooth 

 above, closely striate beneath ; mesopleurse nearly smooth; meta- 

 pleur?e apically coarsely reticulate. Scutellum smooth, with 

 large basal transverse fovea, from which two lines of foveate 

 punctures run to apex. Median segment smooth, with large 

 diffuse punctures. Petiole closely trans-striate, as long as 

 remainder of abdomen. Terebra slightly longer than body, 

 sheaths black. Hind coxse irregularly trans-striate; hind femora 

 bidentate. 



Black ; outer orbits, front tubercle, face, frons, and scape more 

 or less obscurely red ; anterior legs brown, their tarsi paler ; 

 basal joints of hind tibia; testaceous. Wings clear hyaline; 

 stigma and nervures black. 



Length 11 mm. ; terebra 12 mm. 



Habitat: Mankwari, New Guinea (May). 



Cameron states that this species much resembles P. inacidifrons 

 Cam., from Borneo, but is more slenderly built, with hyaline 

 wings and a fovea at base of scutellum, maculifrons having the 

 wings infumate, no fovea at base of scutellum. 



Hemistephanus. 



Enderlein (4), pp. 189 et 301. 



Dr. Giinther Enderlein defines this subgenus as having that 

 part of the median nervure beyond the external submedian cell 

 obsolete and the cell open behind; the discoidal cell almost as 

 large as the cubital and always touching the submedian cell ; 

 stigma long and narroAV. Type : H. macrurus Schlett. 



This group, or subgenus, appears to be confined to South 

 America, being at present known chiefly from Brazil, with a few 



