320 DIPTERA. 
3. Antenne and palpirufous . . . . . 1. ee ee « + rebripalpis, v. d. Wulp. 
Antenne and palpi black . . . . a 
A Legs black, with the tibiz testaceous c \, or rufous, with black 
tarsi (9) (larger species). . . Loe . oe. ee ee) 6COpiosa, v. d. Wulp. 
Legs almost wholly black in both sexes (smaller species) . . . parvula, v.d. Wulp. 
5. Eyes of the male contiguous . . . ee ee ee) Signatipennis, v.d. Wulp. 
Eyes of the male separated by a linear front 2 ee ee ee) 6disereta, v. d. Wulp. 
1. Spilogaster trigonata, sp.n.,g. (Tab. VIII. figg. 4; 4a, head in profile. ) 
Thorax cinereous, with four blackish stripes; abdomen yellowish, with blackish triangular dorsal spots ; 
antenne, palpi, and legs testaceous. 
Length 10°5 millim. 
Front grey, slightly separating the eyes; frontal band black, linear ; frontal bristles descending to the root of 
the antennz, the lowest pair of these somewhat stronger than the others ; face and cheeks yellowish-grey, 
the face perpendicular; vibrisse just at the oral margin; lower part of the cheeks under the eyes narrow, 
with a row of bristles. Antenne testaceous, inserted on the median line of the eyes; second joint with 
some bristles; third joint elongate, two and one-half times as long as the second, reaching to near the 
vibriss ; arista thickened at the base, long-haired. Proboscis brown, thick ; palpi testaceous, cylindrical. 
Thorax and scutellum greyish-cinereous; thoracic dorsum with four blackish stripes, the lateral stripes 
interrupted at the transverse suture. Abdomen elongate, conical, yellowish, with a blackish dorsal band, 
formed by a row of triangular spots on the first three segments, the spot on the third segment being the 
largest ; third segment with a row of marginal macrochetzee and the anal segment with many irregularly 
arranged macrochete. Legs slender, testaceous, the tarsi brown; foot-claws and pulvilli elongate, the 
pulvilli yellowish. Tegule whitish. Wings greyish-hyaline ; small cross-vein under the end of the first 
vein and distinctly beyond the middle of the discal cell; third and fourth veins nearly parallel; terminal 
section of the fourth vein nearly double as long as the penultimate section ; posterior cross-vein oblique, 
slightly curved. 
Hab. Nicaracva, Chontales (Janson). 
A single male specimen. 
2. Spilogaster rubripalpis, sp. n., 2. 
Cinereous ; thorax with indistinct brown stripes; abdomen with four blackish spots; hind border of the 
scutellum, antenne, palpi, and legs rufous. 
Length 5-6 millim. 
Head whitish-cinereous; front as broad as the eyes; frontal band blackish, much broader than the lateral 
portions ; face perpendicular; vibrisse at the oral margin ; lower part of the checks narrow, with a row 
of bristles. Antennz rufous, inserted on the median line of the eyes; second joint with a bristle; third 
joint slender, twice as long as the second, brownish towards the tip; arista black, long-plumose. Pro- 
boscis black ; palpi rufous, filiform. Thorax, scutellum, and abdomen cinereous; thoracic dorsum with 
four indistinct brown stripes; hind border of the scutellum slightly rufous ; abdomen pointed towards 
the apex, with four rounded blackish spots—two on the second and two on the third segment; at the 
hind margin of the third segment and on the anal segment are a few erect macrochete. Legs rufous, 
the tarsi black ; foot-claws and pulvilli short. Tegule whitish. Wings greyish-hyaline, with a short 
costal spine ; small cross-vein under the end of the first vein and distinctly beyond the middle of the 
discal cell ; third and fourth veins divergent towards the end; terminal section of the fourth vein longer 
than the penultimate section (3: 2); posterior cross-vein concave. 
Hab. Mexico, Dos Arroyos, Tepetlapa, and Sierra de las Aguas Escondidas, all in 
Guerrero, Cuernavaca in Morelos (H. H. Smith) ; Costa Rica, Caché (Rogers). 
