'?6 INSECUTOR INSCITI^ MENSTRUUS 



more, coxae largely black. Wings and tegulae practically same. 

 Holotype, No. 19425, U. S. Nat. Mus. 



Eusaundersiops, new genus. 



Genotype, Eusaundersiops notata Townsend, new species. 



Differs from Saundersiops as follows: Two short filiform 

 palpal stubs, without bristlets. Proboscis one and one-half 

 times head-height. Second aristal joint but little longer than 

 wide. Abdominal macrochaetae practically spinelike, median 

 discal patch on second segment but none on third, less than 

 posterior half of anal segment spined. A few submarginal 

 to discal lateral on second and third segments. Venter with 

 spine bunches only on plates 1 and 3. Marginal rows of sec- 

 ond and third segments continuous. A very weak hairlike pro- 

 clinate pair of ocellar bristles. Parafacials and parafrontals 

 thickly clothed with long hair. 



Eusaundersiops notata, new species. 



Length of body, 12 mm. ; to end of spines, 13.5 mm. ; of 

 wing, 12.5 mm. Two males, east base of Huascaray Ridge, 

 montanya of western edge of Jaen Province, Peru, about 7,000 

 feetj September 22, 1911, on foliage (Townsend). 



Black. Face and cheeks silvery-gray, satiny. Parafrontals 

 blackish, only faintly pollinose. Frontalia brown, showing pol- 

 len-bloom in oblique light. Antennae wholly blackish, articu- 

 lations faintly rufous. Palpi testaceous. Occiput ashy, beard 

 quite gray. Thorax and scutellum shining greenish-black, very 

 thinly dusted with pollen, latter showing mostly in front where 

 the beginning of three narrow median vittae is visible. Abdo- 

 men shining black, segments 1 to 4 broadly dark rufous on 

 sides; segments 2 to 4 with pair of silvery pollinose spots on 

 base, one on each side of median line, the pair on second seg- 

 ment small, those of anal segment extending over rufous lateral 

 border on venter but appearing in certain lights to be inter- 

 rupted by the rufous. Legs black, tibiae tinged with rufous. 

 Wings evenly smoky, darker at extreme base. Hind scale 

 of tegulae pure snow-white, with short white fringe; front 

 scale deeply smoky, with long black fringe. 



Holotype, No. 19426, U. S. Nat. Mus. 



