50 ENTOMOLOGICAL NEWS. [Feb., '13 



Eutrixoides n. gen. 



Face on the lower half of its sides bare. Antennae reaching 

 about half way to oral margin, vibrissae weak, cruciate, far 

 above oral margin. Occiput strongly convex. Frontals do not 

 extend below base of second antennal joint, arista microscopi- 

 cally pubescent. Horizontal diameter of the occiput above the 

 neck less than one-half that of the eye, head at vibrissae no- 

 ticeably shorter than at base of antennae. Sides of face at nar- 

 rowest part, one-third to one-half as wide as median depres- 

 sion. Penultimate joint of arista at most only slightly lonj^er 

 than wide. Palpi subcylindrical, less than one-half as wide as 

 proboscis. Fourth vein entire, apical cell open, ending close to 

 extreme wing tip. Sternopleural bristles two, dorsocentrals var- 

 iable. Inner vertical macrochaetae cruciate, outer verticals 

 merged with the cilia of posterior orbit, all macrochaetae of 

 face and front weakly developed. Abdomen without ventral 

 carina. Ovipositor horny, flattened, exposed, doubled forward 

 under abdomen, nearly one-half as long as abdomen. Male 

 without subanal appendages. 



At first glance this form seems to fall naturally to Eutrixa 

 Coq., but the remarkable development of the ovipositor necessi- 

 tates the erection of a new genus for its reception. 



Eutrixoides jonesii nov. sp. (PI. Ill, figs, a-f.) 



Length, 7 to 8 mm. Habitat, Anasco, Porto Rico. General appear- 

 ance to naked eye, slender, brownish gray, nowhere shining. Legs 

 rather long, wings slightly brownish. 



Microscopic description : Male, front and ocellar triangle light 

 brown, vitta almost linear immediately before the ocelli. Parafacials 

 cinereous, a narrow cinereous line extending therefrom upward along 

 inner margin of eyes to vertex. Antennae entirely clear ferruginous 

 yellow, arista slender, incrassated only at extreme base, microscopical- 

 ly haired. Cheeks yellowish with whitish reflections. Palpi and pro- 

 boscis yellow. 



Thorax yellowish gray, pollinose, opaque. A distinct ova! black spot 

 surrounds each of the last two anterior dorsocentral bristles, inner 

 longitudinal vittae distinct, black, extending back beyond suture, space 

 included between them darker than surrounding surface. Outer 

 longitudinal vittae distinct, expanding into smoky elongate spots ex- 

 tending from humeri nearly but not quite to postalar callus. Scutel- 

 lum yellowish gray pollinose, sides brown. 



