. TETANOPS. 391 
Tetanops, Fallén, Ortalide, p. 2 (1820). 
TETANOPS. 
In the Mexican collections before me two species of this genus are represented :— 
Front with four blackish stripes, the sides cinereous, distinctly black- 
punctured . 2 w/e ee ee vittifrons, v. d. W. 
Front rufous, with two red stripes, the sides less distinctly punctured . . . rufifrons, Vv. d. W. 
1. Tetanops vittifrons, sp.n.,g 9. (Lab. X. figg. 24; 24, head in profile. ) 
Cinereous, black-punctured ; front with a rufous median band and four blackish stripes; abdomen black ; 
antenne and legs rufous, the femora blackish; wings with brownish spots on the costa. 
Length 6 millim. 
Front prominent, broader than the eyes, cinereous, with four blackish stripes and a rufous median band; the 
cinereous portions distinctly black-punctured ; the orbits of the eyes white ; face pale rufous, with four 
black spots—two, lateral, on the cheeks near the eyes and two on the inner side of the facial ridges; eyes 
oval; beneath them on the cheeks a small, perpendicular, black stripe; occiput dark rufous, blackish 
behind the eyes. Antenne rufous, porrect; third joint elliptical, more than twice as long as the second. 
Proboscis black; palpi rufous. Thorax without bristles, cinereous, black-punctured, anteriorly with 
indications of two blackish stripes; scutellum blackish, sometimes slightly rufous, its hind border with 
two very short bristles. Abdomen black or blackish-cinereous, finely granulate; ovipositor of the female 
shining black, flattened, broad, attenuated towards the tip. Coxe and femora blackish, the femora at the 
tip, the tibie, and tarsi yellowish-rufous; the two or three terminal tarsal joints infuscate. Halteres 
yellow. Wings greyish-hyaline, with some more or less distinct, brownish spots on the costa—the first 
at the base, the second reaching beyond the origin of the cubital cell, the third at the end of the medi- 
astinal cell, and the fourth at the tip of the wing ; third and fourth veins parallel; small cross-vein beyond 
the middle of the discal cell. 
Hab. Mexico, Jalisco (Schwmann), Chilpancingo and Amula in Guerrero, Cuernavaca 
in Morelos (H. H. Smith). 
Four males and three females. This species is closely allied to 7. duridipennis, Low 
(Monogr. Dipt. N. Amer. iii, p.119); but it has clearer wings, with more distinct costal 
spots, and rufous tibiee (in 7’. (wridipennis the fore and hind tibie are infuscate). ‘The 
black frontal stripes are very conspicuous. 
2. Tetanops rufifrons, sp.n.,¢. (Tab. X. tig. 25, head.) 
Thorax cinereous, black-punctured ; head, antenne, and legs rufous, the femora sometimes infuscate in the 
middle; abdomen blackish ; wings with brownish costal spots. 
Length 5-5°5 millim. 
In most respects agreeing with the preceding, but differing from it in the clearer coloration of the head and 
legs. The front is rufous, the sides punctured, but less distinctly than in 7’. vittifrons; the median band 
is without punctuation and bordered on each side by a dark red stripe; face with two black spots on the 
ridges; the spots near the eyes are absent; the dark stripe under the eyes is less distinct. The legs, 
including the coxmw, are rufous; in some specimens the femora have a more or less conspicuous blackish 
band in the middle. . 
Hab. Mexico, Presidio de Mazatlan (forrer), Chilpancingo in Guerrero 4600 feet 
(H. H. Smith). . 
Several specimens, all females. 
