DIPTERA. 455 
Two males. In the diagnosis previously given by me! I mentioned also the female ; 
the specimens of this sex, however, which I formerly referred to X. gracizenta do not 
differ from those of X. dorsalis, as they have the coxe and femora rufous. 
6. Xanthomelana anceps. (Tab. XIII. fig. 15, ¢.) 
Xanthomelana anceps, v. d. Wulp, Tijdschr. voor Ent. xxxv. p. 188'. 
Deep black, including the antennae, legs, tegule, and halteres, the abdomen only yellowish-red ; wings 
blackish. 
Length 5 millim. 
This species differs from the others in the almost contiguous eyes and in the shape of the abdomen, which is 
. not cylindrical, but ovate and convex. The face and cheeks are dark grey; the front is black and 
triangular; the antenne and palpi are likewise black ; the third antennal joint is but little longer than 
the second ; the arista thickened at the base. The abdomen is somewhat infuscate towards the anus; the 
macrochetz on the hind margin of the segments are longer and laterally more numerous. The posterior 
tibie have some bristles on their outer edge ; the foot-claws and pulvilli are elongate, the pulvilli blackish. 
The black coloration of the wings is obsolete towards the hind margin and the tip ; the apical cell is rather 
long-petiolated ; small cross-vein under the middle of the mediastinal cell and beyond the middle of the 
costal cell; posterior cross-vein straight, nearer to the small cross-vein than to the curvature of the 
fourth vein. 
Hab. Mexico 1, Atoyac, Vera Cruz (H. H. Smith). 
Three male specimens. 
[N.B.—Xanthomelanodes arcuata (Say) has been recorded by Mr. ‘Townsend [Ann. 
& Mag. Nat. Hist. (6) xx. p. 285 (1897)] from Paso de Telaya, Vera Cruz.—Ep.] 
The following species have been referred by Bigot to the group Ocypterine :— 
Scopolia (=Phoricheta, Rond.) satanica, Bigot, Ann. Soc. Ent. Fr. 1888, p. 254.— 
Mexico. 
Stevenia pallidiventris, Bigot, 1. c. p. 255.—Mexico. 
Jiavocalyptrata, Bigot, 1. c. p. 255.—Mexico. 
Scopolia satanica, Bigot, belongs to the genus Penthosia, of the group Phanine 
(vide infra). As to the species of Stevenia, they seem to have many affinities 
with Xanthomelana; but I must remark that in this latter the arista is bare, 
whilst in Stevenia, Rob.-Desyv., it is distinctly plumose. 
PHANIN& (p. 5). 
Since my remarks on this group were published, I find that the genus Ancylogaster, 
Bigot (1884), including a single species from Mexico, belongs to it, and two other 
genera, Clinogaster and Penthosia, have since been added by myself. 
