294 The Philippine Journal of Science 1917 



Abdomen longer than head and thorax together, first tergite 

 long trapezoidal, a little less than twice as wide apically as 

 basally; length one and a half times width at apex; second ter- 

 gite as long as first, gradually widened, its length a little greater 

 than apical width; third, fourth, and fifth tergites shorter and 

 broader, with a complete median carina running to middle of 

 fourth tergite; first and second tergites and basal halves of 

 fourth and fifth coarsely, irregularly, longitudinally striate; 

 sixth and seventh tergites smooth and shining, sparsely punctate 

 at base; first suture very strongly impressed, second, third, and 

 fourth less so, all sutures indistinctly crenulate. Hind tibiae 

 with two long, equal, curved spurs, which are as long as the 

 three basal tarsal joints together; first hind tarsal joint slightly 

 shorter than following three together. 



Stigma large, about four times as long as broad, scarcely 

 angulate at insertion of radius, which is distinctly before the 

 middle ; first abscissa of radius about half length of second ; sec- 

 ond cubital cell somewhat narrowed apically, more than twice 

 longer than high; first transverse cubital very oblique, second 

 vertical and decolored; recurrent vein entering first cubital cell 

 at extreme apex, nearly interstitial; parallel vein inserted far 

 below middle ; submedian cell considerably longer than median. 



Luzon, Laguna, Los Banos (coll. Baker). 



Genus MACROSTOMIONELLA novum 



Eyes very large, malar space and cheeks relatively small. 

 Ocelli large, equidistant, rather strongly raised. Vertex back 

 of ocelli rather short, about as long as ocellar area. Antennre 

 longer than entire body; scape one and a half times as long as 

 wide ; f unicle as long as wide and half length of scape ; flagellar 

 joints about three times as long as wide. Maxillary palpi longer 

 than anterior femora, with third and fourth joints terete, but 

 very greatly enlarged; diameter of first gradually increasing 

 proximad until it is more than twice the diameter of anterior 

 femora ; fourth joint nearly as wide basally as the third apically 

 and gradually narrowed to apex; first joint nearly twice as long 

 as a mandible, fourth about three fourths as long, fifth joint 

 short and broad, sixth stylate. Labial palpi stout, longer than 

 long diameter of eye, second joint somewhat swollen and sub- 

 equal to fourth in length, third shorter ; upper tooth of mandibles 

 projecting far beyond lower tooth. 



Mesonotum trilobate, notauli deep, posterior median area very 

 narrow and grooved. Scutellum quadrifoveate anteriorly. Me- 

 tanotum with a very short median carina anteriorly, remainder 



