372 DIPTERA. 
blackish cross-bands extending from the costa to the hind border; the median band enlarged in the 
middle, covering the posterior cross-vein, but not reaching the small cross-vein ; second vein ending in 
the costa above the posterior cross-vein; small cross-vein before the middle of the discal cell; first 
posterior cell attenuated, but not closed ; third basal cell triangular, somewhat extended in a point, which, 
however, is removed from the hind border. 
Hab. Mexico, Acapulco, Dos Arroyos, and Venta de Zopilote, all in Guerrero 
(H. H. Smith), North Yucatan (Gaumer). 
Three males and one female. 
9. Calobata latifascia, sp.n., ¢ 2. (Tab. IX. fig. 25, 2 .) 
Black; middle and hind femora with white rings; wings with a broad blackish cross-band behind the middle, 
the tip infuscated ; third basal cell elongate. 
Length 8 millim. 
Head bluish-black ; face laterally whitish. Antenne black; basal joints short; third joint elliptical; arista 
bare. Proboscis thick and black. Thorax, scutellum, and metanotum black, opaque; prothorax shining 
black; pleurz above the middle cox with a white reflection ; metanotum with a dentiform projection on 
each side. Abdomen black; hind border of the second segment whitish; the last segment slightly 
bluish ; the sides of the basal segments with fine, long, whitish hairs. Legs black; intermediate femora 
with a white ring behind the middle; hind femora with two white rings—one at the base, the other 
before the tip. Halteres black. Wings hyaline; the cross-band broad, with parallel sides, blackish- 
brown, paler towards the hind border, not reaching the small cross-vein, but covering the posterior cross- 
vein ; the brownish coloration of the tip of the wing slightly extended on the hind border; small cross- 
vein distinctly beyond the end of the first vein and on the middle of the discal cell; second vein ending 
in the costa a little beyond the posterior cross-vein ; third basal cell elongate and pointed. 
Hab. Costa Rica, Caché (Rogers); Panama, Boquete 3500 feet (Champion). 
One specimen of each sex. 
10. Calobata lunulata, sp.n., ¢ 9. (Tab. IX. fig. 26, wing.) 
Black ; femora with white rings ; front tarsi white in the middle; wings with three blackish cross-bands, of 
which the second and third are separated by a semilunular interspace; first posterior cell closed. 
Length 6°5—-7°5 millim. 
Head reddish-brown, sometimes very obscure, nearly black; occiput shining bluish-black. Antenne varying 
in colour from dark rufous to black ; third joint elliptical, twice as long as the basal joints ; arista bare. 
Thorax, scutellum, and abdomen black; pleure, metanotum, and borders of the abdominal segments with 
a bluish-white reflection; male genitalia with a large furcate prominence beneath; ovipositor of the 
female long, coniform, and pointed. Legs black; intermediate and hind femora usually clearer, some- 
times brownish-rufous, with a white ring beyond the middle, the hind femora white at the base; the 
front tarsi with joints 2-4 white. Halteres black. Wings hyaline, with three blackish cross-bands— 
the first before the small cross-vein and descending to the hind border at the end of the third basal cell, 
the second very broad, the third forming a border at the tip of the wing, the second and third separated 
by a convex or semilunular transparent stripe; second vein ending a little beyond the posterior cross-vein ; 
first posterior cell closed and usually petiolated; small cross-vein beyond the end of the first vein and on 
the middle of the discal cell; third basal cell elongate and pointed. 
Hab. Mexico, Presidio de Mazatlan (Forrer), Medellin near Vera Cruz, Frontera and 
Teapa in Tabasco (H. H. Smith), North Yucatan (Gaumer). 
Several specimens of both sexes. This insect seems to be nearly allied to C. lasciva 
(Fabr.), and may perhaps belong to the same species; but the descriptions of 
