9(j I'NSECUTOR INSCITI^ MENSTRUITS 



about three- fourths of eye-height. Clypeus short; epistoms 

 almost as long as clypeus and greatly produced, its profile bent 

 at little more than a right angle from that of clypeus. Frontal 

 and peristomal bristles weaker and more scanty. Three closely 

 placed sternopleurals in line, three postsuturals. Macrochastse 

 practically continuous on hind margins of second and third 

 segments. Anal segment very deeply emarginate, rather more 

 so than in any other form yet known. All the segments strongly 

 arcuate, the front border of anal segment especially so. Ma- 

 crochgetae of abdomen not so heavy, tarsi more slender. Thorax 

 shortened, and head narrowed. 



Named in honor of Mr. F. Campos. 



Camposiana emarginata, new species. 



-Length of body, 9 mm. ; of wing, 9.5 mm. One female, Quito, 

 Ecuador, 2,850 meters (9,262 feet) ; F. Campos, collector. 



Dull fulvorufous, thinly tavv^ny pollinose. Parafrontals and 

 mesoscutum dull olive. Third antennal joint and arista black- 

 ish. Frontalia rufous. First two antennal joints, humeri, 

 scutellum, and legs fulvous. Abdomen fulvous to pale rufous, 

 anal segment with large patch of tawny pollen extending in 

 attenuated line between buttocks and seen in some lights to 

 extend over latter ; other segments thinly pollinose. Wings 

 lightly smoky, the costobasal area yellowish. Tegulse tawny- 

 whitish. 



Holotype, No. 19962, U. S. Nat. Mus. 



Austeniops, new genus. 



Genotype, Saundersia truncaticornis Wulp, 1888, Biol. C.-A. 

 Dipt. II, 26, pi. 2, fig. 4. Volcan de Chiriqui, 3,000 feet, Pan- 

 ama. 



Differs from all other described genera of the Epalpus group 

 by the presence of a strong facio-orbital bristle near lower end 

 of eye. Third antennal joint a little longer than second, trun- 

 cate apically. Arista with short basal joints. Scutellum with- 

 out heavy spines. First abdominal segment with a median 

 marginal pair of spines, second with marginal row, third with 

 double row, fourth with irregular spines and hairs. Ventral 

 plates spinose. 



