810 PROCEEDINGS OP THE NATIONAL MUSEUM. vol.43. 



CESTROGASTER FUMOSUS, new species. 



Length of body, 5.5 mm.; of wing, 6 mm. One female, Kio 

 Charape, in the montana of the east slope of Cordillera Oriental in 

 Province of Jaen, northern Peru, about 5,000 feet, September 12, 

 1911, on foliage. 



Black, Hghtly silvery. The narrow parafrontals, linear parafacials, 

 facial plate, facialia and orbits are silvery-white pollinose, though 

 appearing blackish in some lights. Occiput and cheeks ashy. Fron- 

 talia and antennae soft black, showing a grayish bloom in some lights. 

 Pleurae and humeri silvery-white pollinose. The silvery pollen of 

 presutural mesoscutum leaves a median pair of black vittae confluent 

 anteriorly and a black spot on each side joined by a line with the 

 broadened confluent area in front of the vittae. The postsutural 

 mesoscutum is broadly silvery pollinose on hind margin, more than 

 anterior half being soft dark brown like the entire scutellum which is 

 without pollen. First abdominal segment wholl}^ dark brown, but 

 with a brassy-cinereous bloom in oblique view; second and third 

 segments broadly silvery-white polHnose on anterior margins, most 

 broadly so on sides and extending on venter, the rest of surface being 

 shining dark brown with the same faint bloom as first segment show- 

 ing in oblique view; anal segment broadly bordered on each side with 

 silvery-white pollen, brown in middle. Legs brown. Wings lightly 

 infuscated on distal half and costal margin, rest nearly clear; tegulae 

 deeply yellowish-fuscous, the anterior portion of hind scale and whole 

 of front scale nearly white. 



Type.—Csit. No. 15148, U.S.N.M. 



STabfamily PYRRHOSIINT^. 



Genus OPHIRION To^wnsend. 



Ophirion Townsend, Anu. Ent. Soc. Amer., vol. 4, 1911, pp. 134, 146. 



Belongs in the group with Pyrrhosia and Micromyohia. Differs 

 from former genus in the short proboscis, bare arista, narrow front 

 of male, oral margin not prominent, claws of male slightly elongate, 

 etc. Differs from Micromyohia in the male being without orbital 

 bristles, male claws a little longer than those of female, etc. 



Front of female about or nearly width of one eye, the face being 

 but slightly widened from this; front of male but little more than 

 one-half eye-width, the face below being twice this width. Frontal 

 bristles all reclinate in both sexes except the pair on each side of 

 antennal insertion. Two proclinate orbital bristles in female, none 

 in male. No ©cellar bristles in either sex. Frontalia very narrow, 

 parafacials bare and very narrowed below ; cheeks a little wider than 

 length of second antennal joint, the eyes descending almost as low as 

 vibrissal angles, which are practically level with the middle of oral 



