18 PHILIPPINE DIPTERA, II 



velvety black patch, more distinct in female than in male ; meta- 

 pleurse with thin and soft white hairs. Scutellum black, in the 

 male shining and black-haired, in the female gray-dusted and 

 whitish-haired. Mesophragma black, gray-dusted on the sides. 

 Halteres black, their stalks yellow at base. 



Abdomen in both sexes entirely black, shining, even on venter ; 

 the first two segments in the female gray-dusted, in both sexes 

 the two last segments with a broad triangular spot of white 

 dust on the upper side; abdominal hairs mainly whitish. Male 

 genitalia black and black-haired. Legs with the coxae black; 

 middle tibiae dark yellowish; four posterior femora with a 

 yellow ring at end, which is narrow and less distinct in the male, 

 broader in the female. 



Wings of the male with the basal half faintly yellowish hyaline, 

 the apical half infuscated, more intensively infuscated toward 

 the middle and thus forming a dark crossband below the stigma, 

 which goes below the discoidal cell, the inner angle of the second 

 submarginal being hyaline. In the female the wings are hyaline 

 on the basal half, being only yellowish along the costal cell, and 

 brown on the apical half; from the hyaline inner angle of the 

 second submarginal cell begins a hyaline band which ends in the 

 fourth posterior cell and, therefore, divides the dark part into 

 two bands, united above and below ; in the first basal cell there is 

 a dark band before the root of the third longitudinal vein. 

 Stigma brownish in both sexes. Venation as in Atherix limbata, 

 but the cubital fork is distinctly longer and provided with a 

 shorter stalk. 



LUZON, Laguna, Los Banos and Mount Maquiling; Tayabas, 

 Malinao (Baker) . 



Genus SCHIZELLA novum 



This new genus of the family Rhagionidse (Leptididse) is 

 erected for a small fly that shows the general appearance of 

 a Chrysopilus, differing in the form of the proboscis and chiefly 

 in the extraordinary development of the third antennal joint; 

 the latter character is noticeable because of the usual smallness 

 of the antenna? in Chrysopilus. This elongated third joint is 

 besides divided into two branches, forming a fork, a thing not 

 rare in the family Tabanidae, but never observed in the Rhagio- 

 nidse. The terminal style, which is long in Chrysopilus, is rudi- 

 mentary in the new genus. 



The principal characters of the new genus are as follows: 

 Head as in Chrysopilus, but distinctly more transverse, facial 



