MASICERA. | 107 
_ either of these by the black palpi and the absence of discal macrochewte on the abdomen. The face and 
front are of the same cinereous coloration as the thorax, the front, however, with a slightly yellowish tint ; 
the frontal band is narrower than the cinereous lateral portions. The anal segment is not pointed, and on 
the ventral side it is less densely beset with bristles. The wings are greyish ; the small cross-vein is on 
the middle of the discal cell. 
Hab. Mexico, Teapa in Tabasco (H. H. Smith). . 
Two female specimens. 
6. Masicera inquinata, sp. n., 2. 
Cinereous ; four thoracic stripes, reflections on the abdomen, antenne, palpi, and legs black; small cross-vein 
before the middle of the discal cell. 
Length 8 millim. , 
_ Front much broader than the eyes, yellowish-cinereous, the frontal band scarcely more obscure ; frontal bristles 
on each side in a curved row, descending to the number of five beneath the root of the antenne; face 
white; vibrissee surmounted by some shorter bristles; beard whitish. Antenne shorter than the face; 
_ second joint bristly ; third joint three times as long as the second ; arista thickened to the proximal half. 
Thorax and scutellum light cinereous; thoracic dorsum with four black stripes over its whole length, and 
posteriorly between the intermediate ones a less distinct blackish stripe, the latter prolonged over the 
scutellum; hind border of the scutellum slightly testaceous. Abdomen ovate; first segment black, 
distinctly shorter than either of the following segments, which are cinereous with blackish-brown 
reflecting spots, chiefly on the hind margins, and a black dorsal stripe; on the hind margin of the second 
segment are two dorsal and two lateral macrochete (one on each side); on the hind margin of the 
third segment a row of ten macrochete; on the anal segment several macrochete ; ventral surface 
blackish, Front tibia outwardly with bristles; middle tibie with a long bristle on the outside and a 
shorter one on the inside; hind tibie outwardly fringed, with a longer bristle below the middle. 
Tegule whitish. Wings greyish-hyaline; small cross-vein before the middle of the discal cell; curvation 
of the fourth vein nearly rectangular; apical cross-vein slightly concave; posterior cross-vein almost 
straight. 
Hab. Mexico, Cuernavaca in Morelos (H. H. Smith). 
A single female specimen. 
7. Masicera impedita, sp. n., 2. 
Cinereous; head silvery-white; frontal band, four thoracic stripes, first abdominal segment, antenne, palpi, 
and legs black. 
Length 9 millim. 
Front and face cinnamon-red, with a very conspicuous silvery-white reflection ; the front a little broader than 
the eyes; frontal band narrower than the silvery-white lateral portions ; frontal bristles on each side in 
a curved row, descending to the number of three beneath the root of the antenne ; vibriss# surmounted 
by some shorter bristles. Antenne nearly as long as the face; second joint bristly ; third joint four or 
five times as long as the second; arista thickened to the proximal half. Proboscis black, with the 
terminal lips rufous ; palpi black, cylindrical. Thorax light cinereous ; thoracic dorsum with brownish 
reflections and four black stripes, the outer stripes interrupted at the transverse suture and none of them 
reaching the posterior margin ; scutellum cinereous. Abdomen ovate; first segment black, shorter than 
either of the following segments, which are light cinereous, with irregular brownish reflecting spots; on 
the hind margins of the first and second segments two dorsal macrochete, on those of the third and fourth 
segments a row of macrochets, all the macrochetz inserted at a little distance from the margins; ventral 
surface blackish. Bristles of the legs nearly as in the preceding species; the bristles on the outside of the 
front tibice shorter, those of the hind tibie less fringe-like. Tegule and wings as in WM, inquinata; the 
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