CHOLOMYIA.—MELALEUCA. 247 
the tibie ; in the male the middle legs disproportionately elongate, at least twice as long as the others ; 
foot-claws and pulvilli elongate in the male. Wings longer than the abdomen ; apical cell opened at the 
wing’s tip; curvature of the fourth vein with a blunt angle and without appendage ; posterior cross-vein 
beyond the middle between the small cross-vein and the curvature of the fourth vein, | oe 
1. Cholomyia inzequipes. (Tab. VI. figg.1; la, head; 2, the insect seen from 
behind.) | 
Cholomyia inequipes, Bigot, Bull. Soc. Ent. Fr. 1884, p. xxxvil. 
Thorax and scutellum black, wholly or partly with a whitish tomentum ; abdomen yellow, black towards the 
anus; legs yellow, the middle and hind tibie and all the tarsi brownish. 
Length 8°5 millim. 
Head white ; frontal band blackish-brown, in the male trigonal, in the female as broad as the lateral portions. 
Antenne yellowish (4) or rufous (2); third joint from three to four times as long as the second ; arista 
blackish, thickened at the base and at the thickened portion more densely pilose. “Proboscis brown, the 
terminal lips rufous; palpi pale rufous, in the female slightly thickened towards the tip. Thorax and 
scutellum black ; in the male the thoracic dorsum before the transverse suture and an oblique band on the 
pleurs, from the shoulders to the middle cox, are white; in the female the whole thorax, and even the 
scutellum, with a whitish tomentum. Abdomen of the male yellow, transparent, shining ; the base of the 
first segment and the hind border of the second brownish ; third segment with a broad black hind border ; 
anal segment black, anteriorly with a white lateral spot ; in the female the yellow coloration is reduced 
to the first segment and a rather narrow front border on the second, the latter with whitish reflections, 
the remaining portion of the abdomen being shining black, the third and anal segments with white 
lateral spots ; macrochwte are on the hind borders of the third and anal segments, in the female also on 
that of the second segment. Legs yellow, the tibis (except the front pair) and tarsi brownish ; in the 
male the legs very slender, the middle pair unusually long (the femora and tibie being more than twice as 
long as the others), and the middle and hind femora black towards the tip. Tegule yellowish. Wings 
of the male yellowish, somewhat infuscated on the outer half of the costa, those of the female grey ; 
small cross-vein on the middle of the discal cell; apical cross-vein concave; posterior cross-vein oblique 
and slightly curved. 
-Hab. Mexico, Xucumanatlan 7000 feet, Omilteme 8000 feet, both in Guerrero, 
Teapa in Tabasco (H. H. Smith). 
One male and three female examples. 
The species is a very handsome one. It is possible that it may be the Musca longipes, 
Fabr. ; the description of Wiedemann (Aussereur. zweifl. Ins. ii. p. 379) agrees in some 
respects, but contains nothing about the peculiar length of the middle legs; Fabricius 
gives: “pedes elongati.” 
MELALEUCA, gen. nov.* a a 
Front convex; face perpendicular, not carinated, though very slightly elevated in the middle; vibrisgal 
swellings parallel or even somewhat divergent towards the oral margin, which is not prominent; eyes 
bare ; vibrissw inserted at a short distance above the oral margin, and not longer than the bristles beneath 
them ; checks broad, their lower portion equalling two-thirds the longitudinal diameter of the eyes. 
Antenne inserted beneath a line drawn through the centre of the eyes ; third joint slender, much longer 
than the second; arista densely plumose. Proboscis short; palpi cylindrical. Abdomen ovate; first and 
anal segments shorter than the two median ones; only marginal macrochete. Legs rather short, with 
scattered bristles; the tarsi longer than the tibie. Wings longer than the abdomen ; apical cell opened 
* uédas (black) ; Aev«ds (white or grey). 
