254 DIPTERA NEMATOCERA. 



lum almost white. Palpi blackish. Thorax with the pro- 

 notnm ochreons, blackish at the sides. Mesonotnm mostly 

 blackish, bnt with a pair of distinct ochreons lines on the prae- 

 scntiim which diverge somewhat posteriorly but unite across 

 the suture and continue across the scutum. The four main 

 scutal bristles lon(?, stout and somewhat flattened, thoujjh less 

 so than in S. armnfa ; scutellar bristles small and slender. 

 Several smnll discal brist'es, rather widely spaced. Pleurae 

 blackish on the upper half, pale ochreons on the lower half. 

 Abdomen wholly blackish above, brown-ochreous below; 

 seA'enth sternite with A'^-shaped emars^ination at the tip, the 

 corners produced into lonfj fin£rer-like processes which are 

 sliehtlv swollen apically. Legs with the coxae and trochanters 

 whitish-ochreous ; femora ochreons. each with three dark 

 rinigs, the basal one faint, the next two conspi'"'nous. extreme 

 tip also somewhat darkened. Tibiae all ochreons, with the 

 usual two bla''-kish rinses, one before the m^'ddle and one at 

 the tip. Tarsi ochreons. the tips of the first four and the 

 whole of the fifth segment black. Winn<i with the whole 

 membrane OTevish, with darker clouds in the usual positions; 

 veins all dark except the costa, which is all yellow. i?o + 3 

 unusuallv short and almost vertical; Ax without spur. 

 Halteres blackish. 



Length of bodv 6.3 mm. ; wing 4.8 mm. 



Mt. Penrissen. 4500 feet— 1 9 . 



RTYETNGOMyTA BORNEANA sp. n. (Plate 10, figs. 28, 29.) 



Closelv related to .9. jarana Edw., S. Mmalavana Edw.. and 

 S. fryeri Edw.. but differing from all these in details of genital 

 structure (see fi£?ure\ TTend bristles yellow, as in .S'. javana, 

 but the tips of all the veins distinctly darkened, as in S. fryeri; 

 tip of Ax conspicuously blackened, but not bent backwards. 

 Cell M, rather broadlv sessile. Discal bristles of pvaescutum 

 4 + 2, each group enclosed in a dark spot. Scutal and scutel- 

 lar bristles moderatelv long but not flattened. Abdominal 

 terfrites of (f with apical dark marks only. 



Mt. Murud, 6000-7000 feet— 1 cf 19 (types); 7000 feet— 

 ^^• 

 StyringojStyta flava Brun. 



Mt. Murud. 5500-6300 feet— 1 9 ; Mt. Penrissen, 2000 feet 



-icf. 



