110 DIPTERA. 
Hab. Mexico, Chilpancingo 4600 feet, and Amula 6000 feet, both in Guerrero, 
Atoyac in Vera Cruz (H. H. Smith), Orizaba (coll. Bellardt). | 
Several male and three female specimens, including one of the latter sex from Orizaba 
in the collection of Prof. Bellardi. 
12. Masicera fraudulenta, sp.n., 3 2. 
Cinereous ; frontal band, four thoracic stripes, reflecting spots on the abdomen, antenna, and legs black ; 
palpi rufous; scutellum testaceous towards the hind margin; frontal bristles on each side in double, 
somewhat irregular rows. 
Length 9°5 millim. 
Closely allied to the preceding species, but differing from it in the width of the frontal band (this being 
distinctly narrower than the cinereous lateral portions) and in the frontal bristles being inserted on each 
side in double, somewhat irregular rows. The intermediate stripes on the thorax are less broad and the 
outer ones less conspicuous ; the dark reflections on the abdomen have a browner or testaceous tint ; and 
the bristles on the outside of the hind tibie are more fringe-like. 
Hab. Mexico, Xucumanatlan in Guerrero 7000 feet, Atoyac in Vera Cruz (H. #. 
Smith). 
A female specimen from the former, a male from the latter locality. 
13. Masicera piliseta, sp. n. °. 
Whitish-grey ; frontal band, two lines on the thorax, and legs black; antennz and palpi rufous: arista 
pubescent ; abdomen shining rufous, with black reflections, the front borders of the segments whitish. 
Length 6 millim. 
Front as broad as the eyes; frontal band narrow, black, anteriorly somewhat rufous; frontal bristles scarcely 
descending beneath the root of the antennw; face perpendicular, laterally silvery-white ; oral margin not 
prominent. Antenne nearly as long as the face, rufous; third joint (except its base) brownish, four 
times as long as the second; arista tapering towards the tip, over its whole length with short hairs. 
Thoracic dorsum with two black lines before the transverse suture and exterior to these lines some black 
reflecting spots (instead of the usual lateral stripes) ; pleura cinereous; base of the scutellum black. 
Abdomen oblong-ovate, very shining, reddish-brown, the first three segments with black reflections, 
especially in the middle on the hind borders; anal segment rufous; second and following segments with 
greyish-white front borders ; macrochete strong but not numerous; no discal macrochete on the second 
and third segments. Legs black, the femora and tibie of the front pair piceous. Tegule whitish. 
Wings grey; small cross-vein perpendicular, a little before the middle of the discal cell; third vein 
slightly curved downwards before its end (the opening of the apical cell is thus at a short distance from 
the wing’s tip); curvation of the fourth vein somewhat rounded, not far from the wing’s margin ; apical 
cross-vein slightly concave ; posterior cross-vein distinctly curved. 
Hab. Mexico, Temax in North Yucatan (Gaumer). 
A single female specimen. 
14, Masicera subpilosa, sp. n., ¢. 
Grey ; frontal band, four thoracic stripes, reflecting spots on the abdomen, antenne, and legs black; anal 
segment and palpi rufous; arista pubescent. 
Length 6°5 millim. 
Of a slender form. Head greyish-white ; front slightly narrowed behind and there as broad as the eyes; 
frontal band much narrower than the greyish lateral portions, the latter with cinereous reflections ; 
frontal bristles descending on each side in a single row as far as the end of the second antennal joint; 
