396 The Philippine Journal of Science isi? 



posterior disk of scutellum shagreened. Metanotnm very 

 coarsely and heavily rugose and with a strong and continuous, 

 but irregular median carina; disk of metapleura shagreened; 

 spiracle circular and with a fine, nearly straight, longitudinal 

 sutural carina passing beneath it ; disk of mesopleura posteriorly 

 shagreened, anteriorly rugose, and medially a little depressed, 

 this depression is continued posteriorly in two widely diverging 

 impressed lines. 



Abdomen about as long as head and thorax together, broadly 

 sessile, broadened to third segment; remaining segments, ex- 

 tended, as long as second and third together, smooth, obscurely 

 shagreened, and shining; first tergite longer than its apical 

 width, basal width a little greater than one half of apical width ; 

 second tergite about as long as first, slightly broadened apically, 

 length subequal to apical width; third tergite about two thirds 

 the length of second and subequal to one half the apical width; 

 first and second tergites coarsely and very straight striate, some 

 of the median striae on first tergite converging apically; third 

 tergite more weakly striate on basal two thirds, apical third 

 shagreened and shining; a strong, complete median carina on 

 first and second tergites and on basal two thirds of third tergite ; 

 second suture broadly and strongly impressed, curved, and com- 

 pletely connate, the striae continuous across it ; remaining sutures 

 normal. 



Stigma of medium size, its length about five times its width, 

 radius inserted at two fifths of the length from base; first 

 abscissa of radius two thirds length of second; second cubital 

 cell one and two-thirds times as long as broad, gradually nar- 

 rowed apically; first transverse cubitus slightly oblique, second 

 perpendicular, both decolored ; recurrent vein entering first cubit- 

 al cell a distance from apex a little less than length of first 

 abscissa of radius, but equaling second transverse cubitus, in- 

 tervening vein decolored; parallel vein inserted at lower fifth 

 and broadly curved before insertion; submedian cell far longer 

 than median ; radial vein in hind wings subobsolete and straight, 

 nervellus nearly vertical and curved. 



Luzon, Benguet, Baguio (Baker). 



Rhogas melanosoma Ashmead. 



Rhogas melanosoma Ashmead, Proc. U. S. Nat. Mus. (1905), 28, 970. 



Male. — Length 4.5 mm. Head and thorax brownish yellow, the ocelli 

 pale and placed on a black spot, the eyes black; the antennae, except the 

 first two joints, a spot at apex of the middle and hind femora, more or less 

 of the base and apex of the hind tibiae, the hind tarsi, and the whole dorsum 

 of the abdomen, are black. The abdomen is rugulose, the first, second, 



