100 bulletin: museum of comparative zoology. 



4. Head entirely reddish P. martini Stadlm. 



Head distinctly maculate or varied in color 5. 



5. Wings hyaline, scutellum with foveae at base. . P. malayanns Cam. 

 Wings smoky, no foveae at base of scutellum. 



P. maculifrons Cam. 



6. Legs reddish, head rufopiceous P. damellicus Westw. 



Hind femora- and tibiae black; head pale yellowish, blackened 

 above P. hrevistigma Enderl. 



Diastephanus salomonis Westwood. 



Thesaur. entom. Oxon., 1874, p. 128 (Stephanus). 



A female from Wai-ai most surely belongs to this species which was 

 briefly described by Westwood from an imperfect example. I have 

 appended a description including the details omitted in the original 

 description. 



9 . Length 17 mm. Black with the apical half of the hind femur 

 and constricted part of the hind tibia ferruginous ; head with a broad 

 white band extending from the base of the mandible behind the eye 

 nearly to the top of the eye ; front with the inner orbits and a median 

 line extending half way to the median ocellus pale yellow; mandibles 

 ferruginous at middle. Face transversely striate below the tubercles; 

 irregularly reticulate between the tubercles; between the ocelli with 

 two transverse carinae; behind them with wavy transverse acicula- 

 tions and a median groove. Second and third joints of flagellum equal, 

 each nearly twice as long as the first which is considerably longer than 

 the pedicel. Cheeks smooth and shining. Prothorax very long, 

 equalling the length of the fore leg from the base of the coxa to the 

 knee, its constricted portion finely transversely wrinkled; its posterior 

 margin smooth, preceded by a band of transversely elongated punc- 

 tures ; mesonotum in front irregularly rugose reticulate, smooth behind 

 except for the crenate parapsidal furrows. Propodeum above with 

 coarse thimble-like punctation. Propleurae finely shagreened; meso- 

 pleurae smooth above and below, between and in front with a band 

 of large incompletely impressed punctures. Metapleura reticulate 

 above, below with some incomplete vertical wrinkles. Abdominal 

 petiole as long as the head and thorax, transversely striate above and 

 below except at extreme base; hind coxae similarly striated. Hind 

 femur with serrate projections before the middle where it bears a 



