MEIGENIA. 59 
1. Palpiblackk . 2. 1. 1. 1 1. ew ew ee ee tw we ee albidula, v. d. Walp. 
Palpirufous. 2. . 1... ee ee ee eee ee 
2. Thorax blackish, without stripes; small cross-vein before the 
middle of the discal cell . . . 2 +e + ee ee + +) flaviventris, v. d. Wulp. 
Thorax ochraceous, with black stripes; small cross-vein on the 
middle of the discal cell . . . . . ee eee ee gratiosa, v. d. Wulp. 
1. Meigenia albidula, sp.n.,?. (Tab. III. figg. 6, 6a, head in profile, ¢ .) 
Light cinereous ; frontal band, four stripes on the thorax, the broad hind borders of the abdominal segments, 
antenne, palpi, and legs black. 
Length 7 millim. 
Front a little narrower than the diameter of the eyes, pale ochraceous with brownish reflections ; frontal band 
black, narrowed towards the vertex; frontal bristles descending on both sides in a single row, to the 
number of four, beneath the root of the antennz; face pale yellow; pilosity of the eyes conspicuous only 
when viewed under the lens. Antenne black, shorter than the face; basal joints short; second joint 
bristly on the upper part; third joint four times as long as the second; arista thickened at the base. 
Thorax pale cinereous, with four black stripes—the outer stripes reaching nearly the whole length, and the 
inner ones scarcely prolonged behind the transverse suture ; scutellum grey, blackish at the base. Abdomen 
conical, whitish-grey ; first segment black ; the following segments with broad black hind borders, which 
have a diffuse limitation owing to the blackish reflections; viewed in some directions a black dorsal 
stripe appears ; second and third segments without macrochete (perhaps they are broken off). Tegule 
grey, with a yellowish margin. Wings with a brownish-grey tint; small cross-vein nearly on the middle 
of the discal cell; curvation of the fourth vein forming a blunt angle ; apical cross-vein straight; posterior 
cross-vein sinuate ; end of the apical cell at a little distance from the wing’s tip. 
Hab. Mexico, Teapa in Tabasco (H. H. Smith). 
A single female specimen. 
2. Meigenia flaviventris, sp. n., 2. 
Thorax blackish; scutellum grey ; abdomen yellowish, with white reflections and blackish spots; antenne 
and legs black ; palpi rufous; hind tibie outwardly fringed. 
Length 5:5 millim. . 
Head whitish; front narrowed behind and there narrower than the eyes; frontal band blackish, narrow ; 
frontal bristles descending on both sides in a single row beneath the root of the antenne ; eyes slightly 
pilose. Antennee shorter than the face ; third joint three times as long as the second; arista thickened 
on the proximal half. Thorax blackish, without stripes. Abdomen conical, yellowish-rufous, somewhat 
transparent, and with white reflections ; first segment black ; second and third with two obsolete blackish 
spots, the third and the anal segments with a blackish hind border ; macrochsete very short and incon- 
spicuous among the black hairs, those of the anal segment more distinct. Hind tibie outwardly fringed . 
with bristles. Tegule whitish. Wings greyish-hyaline; small cross-vein distinctly before the middle of 
the discal cell; curvation of the fourth vein with a blunt angle; apical cross-vein straight; posterior 
cross-vein slightly curved. 
Had. Mexico, Orizaba (coll. Bellardi). 
A single female specimen in the collection of Prof. Bellardi. 
In its general facies this species much resembles the European forms (I. bisignata 
and M. floralis). 
a2 
