100 Psyche [October 



Wings with costal half infumated, second and third sections of the 

 costa proportioned 3:1, third and fourth veins parallel. 

 One specimen. Boston, Mass., May, 1914. 



Strongylophthalmyia Heller 



Heller, Wien. ent. Ztg. xxi, 226 (1902) Strongylophthalmus Hen- 

 del, Wien. ent. Ztg. xxi, 179-181 (1902). 



One species occurs on the Pacific slope, having slender body and 

 long legs suggestive of the Micropezidse or the Cordyluridse. The 

 short antennse and little receding face suggest Chyliza, but the 

 slender, impunctate and nearly glabrous body and narrow wings 

 are distinct from that genus. The vestigial, straight and evanes- 

 cent auxiliary vein, distinct break in the costa before the end of the 

 first vein, relatively long basal cells, absence of oral vibrissge, 

 slightly divergent postvertical bristles, pubescent arista, absence 

 of distinct pleural bristles, and widely open first posterior cell 

 indicate the family Psilidse. From Chyliza the genus stands out 

 in having the posterior cheeks not swollen, the center of the face 

 neither sunken nor concave, the palpi slender, the pubescence 

 of the notum and pleurae not dense, appressed or parted in the 

 female, the sides of the metathorax not calloused, the calypteres 

 long-ciliate, the first vein shortened and the anal crossvein incurved. 

 Hendel further characterized his genus as differing from Chyliza 

 in having long ocellar and postvertical bristles, the latter located 

 far behind the ocelli, mesopleurae with distinct prealar bristle, only 

 two strong scutellar bristles, with which cha?totaxy the present 

 species agrees. The pteropleural hairs are sparse. 



Strongylophthalmyia angustipennis sp. nov. 



Length, 3.5 to 5 mm. Head, thorax and abdomen polished 

 black, impunctate, male with striking yellow pubescence, female 

 with pubescence pale and sparse, bristles yellow. Head globose, 

 the anterior part of the front, more extended in the male, the face, 

 very narrow cheeks, and lower occipital orbits yellow, face short 

 and narrow, half the length of the front; eyes large, lower facets 

 larger than the upper ones; two fronto-orbital bristles, frontal 

 triangle not polished; antennae short, third joint orbicular, large 

 and yellow in the male and brown and smaller in the female, arista 

 brown, very briefly and closely pubescent; proboscis brownish, 



