Engyzops. 163 



outwards. Cheeks hairy. Vibrissal ridges almost not converging 

 below; vibrissæ a little ascending, not reaching the middle. Epistoma 

 not retreating, not reflected below. Oral cone and proboscis somewhat 

 short. Palpi quite small, Antennæ inserted slightly below middle 

 of the eye, third joint short, not much longer than second; arista 

 short-plumose in about basal two thirds. Thorax rectangular; three 

 postsutural dorsocentrals and one præ- and three postsutural acrosti- 

 chals, or some of the latter wanting. A præsutural intraalar bristle 

 present; the anterior supraalar (præalar) bristle directed outwards. 

 Exterior posthumeral bristle not rarely wanting. Scutellum with 

 three marginal bristles on each side, the intermediate smallest. Two 

 or three sternopleural bristles. Pteropleura with a few strong hairs 

 above. Propleura hairy. Abdomen with the excavation on second 

 segment only present at base; third segment with a row of marginal, 

 fourth with a row of discai and marginal bristles. Legs with not 

 strong bristles; claws and pulvilli slightly elongate in male. Wings 

 with first posterior cell open, ending near apex of wing, discai angle 

 obtuse; cubital vein with bristles only at base. A small or moderate 

 costal spine present. Squamulæ not hairy. 



The species is viviparous (Thomson: Bull. Soc. Ent. de Fr. 

 1921, 27). 



Of the genus only one species is known, also occurring in Den- 

 mark. 



1. E. Pecchiolii Rond. 



1862. Rond. Dipt. Ital. Prodr. V, 178, 1. — 1907. Kat. palåarkt. Dipt. 

 III, 502. — 1924. Stein, Arch. f. Naturgesch. 90, 6, 211. — Engyops macronyx 

 B. B. Denkschr. Akad. Wiss. Wien, LVI, 168, Tab. VIII, Fig. 192 et 1891. 

 LVIII, 433. — 1907. Villen. Wien. Ent. Zeitg. XXVI, 259, 74 {tnicronyx). 



Of this species I know only the female. Frons nearly as broad 

 as the eye, not protruding. Orbits blackish, cheeks and jowls somewhat 

 greyish. Orbits and cheeks with fine hairs, jowls with few, black 

 bristly hairs. Occiput black, greyish pruinose, with all black hairs. 

 Antennæ black, third joint not much longer than second. Palpi 

 small, brownish. Thorax black, somewhat shining, a little greyish 

 pruinose in front, especially on humeri and with indication of three 

 broad black stripes. Thorax sparingly with short black hairs. Ab- 

 domen black, shining, black-haired; on third segment a row of mar- 

 ginal bristles and on fourth a row of discai and marginal bristles. 

 Legs black. Wings more or less brown tinged; veins black. Squamulæ 

 yellowish, Halteres brownish yellow. 



11* 



