296 The Philippine Journal of Science isn 



Macrostomionella philippinensis sp. nov. 



Basal joints of antennae, vertex, prothorax, mesothorax, and 

 middle and hind coxse bright ferruginous, the latter darker 

 apically. Flagella, lower part of head, mandibles (excepting the 

 black teeth), palpi, fore coxae, and legs stramineous; middle and 

 hind femora apically tinged with yellow. . Wings slightly ob- 

 scured, stigma and veins piceous, arese at apices of radial, third 

 cubital, and third discoidal cells smoky. 



Female, length, 6.5 millimeters ; ovipositor very short, scarcely 

 projecting. 



Head viewed from above with vertex back of ocelli very short, 

 although well filled behind eyes, the surface obscurely, punc- 

 tulately roughened; ocelli very large, nearer to eyes, to the 

 occipital carina, and to each other than once their own diameter. 

 Face somewhat longer than broad, narrowed at middle by the 

 incurving of the eyes, medially long-umbonate and narrowly 

 smooth below antennae, lateral arese horizontally striate; mouth 

 opening large and elliptical; eyes strongly emarginate opposite 

 antennae. Head viewed from side with umbonate portion of face 

 very strongly projecting, malar space as long as width of eye; 

 cheek broad, outer margin parallel to eye margin; eye outline 

 very short and broadly elliptical; second to fourth joints of 

 maxillary palpi enormously swollen, subequal in length; second 

 joint long urn-shaped, twice as long as wide at the truncate tip ; 

 third joint narrower than second, ovate ; fourth joint half width 

 of third and spindle-shaped; fifth joint stylate. 



Mesonotum shining; subobsoletely, punctulately roughened; 

 notauli anteriorly very broad and crenulate, becoming obsolete 

 posteriorly in a broad strong impression, which has a narrow, 

 obscurely pitted, median groove. Scutellum anteriorly with two 

 oblique foveas, smooth within and separated by a sharp carina; 

 disk of scutellum smooth and nearly twice as long as broad. Me- 

 tanotura coarsely and strongly reticulate-rugose, with a rudiment 

 of a median carina at base and with a blunt projection on either 

 side in the position of the spines in Gyroneuron, to the summits 

 of which pass a number of radiating rugae; spiracles elliptical, 

 not at all raised. Mesopleura smooth. 



Abdomen subsessile, subelliptical, lateral margins of first three 

 tergites in a straight line; first tergite long and narrow, grad- 

 ually broadened apically, twice as long as wide at apex; second 

 tergite as long as first, gradually broadened apically; third and 

 following, including the fully exposed seventh, progressively 

 shorter and, after the third, narrower ; first and second and basal 



