from the Philippine Islands. 91 



tropesa singularis Schiner, Novara, Tab. II, f. 2 b, (South America), 

 which I also refer to the Limnohina anomala, has the same crossveins 

 in the marginal cell, the same contact between the submarginal and 

 discal celis, and, like Mongoma, four posterior cells; but the sub- 

 marginal cell is much shorter, and the position of the marginal cross- 

 vein, with regard to the discal cell, somewhat different. The species, 

 P. singularis does not have the length of legs, nor the light, aerial 

 structure of Mongoma; it has distinct empodia, which Mongoma 

 has not. 



Erioceraperennisn.s-p. $ Q. Fiveposterior cells ihodyhlack; 

 dbdomen whitli four yelloiu crossbands ; ivings broivn, with a yel- 

 lowish-white crosshand. Length $ 15 mm. ; $ (without ovip.) 18 mm. 



Head gray, beset with black pile; antennae yellowish-tawny, the 

 tips brownish. Thorax brownish-black, more brown on the pleurae, 

 beset with black pile; halteres blackish. Abdomen black; segments 

 2 — 5 each with a broad reddish-yellow crossband at the base; it is 

 broadest on the 2°'^ segment, and narrowest on the 5''^, where it occupies 

 about one half of the breadth of the segment. The $ forceps (some- 

 what injured in the specimen), seems to be brownish, the appendages 

 at the tip are black. The segment bearing the ovipositor is red. 

 Coxae black, femora yellowish-tawny with black tips; tibiae tawny 

 with black tips; tarsi brownish tawny, the tips of the joints darker. 

 Wings brown, yellowish at base, which color extends some distance 

 along the costa, between the costal and thefirstvein; a yellowish-white 

 crossband between the first and fifth veins, touching the proximal ends 

 of the second submarginal and discal cells; an ill-defined yellowish- 

 white Space at the proximal end of the axillary cell. Five posterior 

 cells; the petiole of the second rathes long. Marginal crossvein about 

 the middle of the distance between the proximal end of the first sub- 

 marginal cell and the tip of the first vein; the tip of the auxiliary 

 vein almost opposite this crossvein. (I do not perceive this crossvein 

 in my male specimen; I suppose that this absence is accidental). — 

 One male, one female. 



NB, Two other specimens are a little smaller and have the legs 

 and the antennae almost uniformly brown; the yellow crossbands on 

 the abdomen are narrower, that on the second segment occupying only 

 the proximal half of the segment; the yellow color at the base of the 

 wings does not reach very far. Still another specimen (Q) resembles 

 thöse two , but has the base of the femora and of the antennal flagel- 

 lum yellow, and more yellow at the root of the wings. I suppose 

 they are all varieties of E. perennis. I also have some specimens 



