from the Philippine Islands. 219 



Eyes g'labrous, oblong; in life, they are purple, with a green 

 crossband in the middle and another, broader one, below. 



Antennae: scapus small; third Joint linear, reaching to about 

 two-thirds of the face; arista long, with a very short pubescence. 



Thorax short, very litfle longer than broad; lateral transverse su- 

 tures deeply marked, connected by a transverse depression. Two post- 

 humeral and two supra-alar bristles; the third of the latter, usually 

 inserted near the scutellar bridge, is wanting ; no praescutellar bristles 

 and none on the pleurae. Scutellum in the shape of a transverse 

 swelling, tvvice and a half broader than long, projecting very little in 

 profile; hence there is no distinct upper nor underside to it; in the 

 middle, there are two long, erect bristles, the distance between them 

 being a little less than one third of the breadth of the scutellum; me- 

 tanotum flat, and, on account of the smallness of the scutellum, very 

 much in view. 



Abdomen clavate, the first segment being long and narrow, with 

 parallel sides; the followiug three segments are much broader than 

 the first and do not differ much in length; the first segment of the 

 ovipositor in the female is rather small and narrow; the ovipositor ends 

 in a point, which bears some microscopic hairs, 



Legs of moderate length and strength; hind femora not incrassate ; 

 front legs short; fore coxae very moveable. Tegulae very small. 

 Wings: Costa and first vein beset with short hairs; the bristles on 

 the third vein exceedingly minute; auxiliary vein closely approximate 

 to the first, bat with a distinct ending in the costa; stigmatic coStal 

 cell long, its distal end distinctly marked, although very acutangular; 

 second vein straight; the third diverges from it eärly, is straight as far 

 as the anterior crossvein, and gently arched beyond ; the anterior cross- 

 vein in placed a trifle beyond the end of the auxiliary vein; fourth, 

 fifth and sixth veins nearly straight; second basal and anal cells very 

 small, the latter not drawn out in a point, The shape of the second 

 basal cell is very peculiar: the discal cell is distinctly formed by a 

 bifurcation of the fourth vein and is undivided by any crossvein at 

 the base; thus the second basal cell is outside of the discal, crowded 

 in between it and the anal. Among my seven specimens, six have 

 this structure; in the seventh, however, the second basal cell is sepa- 

 rated from the discal by a crossvein, as usual among the Ortalidae. 

 The difference between these two structures merely depends on the more 

 or less oblique position of the crossvein ; nevertheless, as the rule seems 

 to be in this genus that it is very oblique and coalesces with the 

 further course of the fifth vein, the Interpretation of this venation is, 

 at first sight, somewhat puzzling. 



XXVI. Heft II. 15 



