362 DIPTERA. 
The following species of Psiline have also been recorded from Mexico :— 
Chyliza apicalis, Loew, Dipt. Amer. Sept., Cent. viii. no.72; Gigl.-Tos, Mem. R. 
Accad. Scienze di Torino, ser. 2, xlv. (sep.) p. 64. no. 70. 
enthea, Gigl.-Tos, loc. cit. p. 64. no. 71. 
Megamerina fulvida, Bigot, Ann, Soc. Ent, Fr. 1886, p. 384. 
The genus Megamerina, Rond., is identical with Lissa, Meig., which belongs to the 
Psiline. 
Group TANYPEZIN &. 
Head hemispherical, the occiput being flattened ; front rather narrow, especially in the male, with bristles 
on the posterior half only; vibrisse absent. Abdomen slender, cylindrical (3) or elliptical (2); 
ovipositor exserted and pointed. Legs elongate; tibie without a preapical bristle ; tarsi longer than the 
tibie. First vein double, the auxiliary vein being distinct ; third and fourth veins convergent towards 
the tip ; the two inferior basal cells small. 
This group contains the single genus Tanypeza, Fall., which is placed by Macquart 
and Schiner in the Calobatine, but which differs so much from the other members of 
that section that its separation appears to be fully justified. 
TANYPEZA. 
Tanypeza, Fallén, Opomyz. Suec. p. 4 (1820). 
Two species are represented in the Central-American collections :— 
Shining black ; legs yellow, with brownish portions; palpi black . . . . claripennis, Schin. 
Rufous; tarsi black, the front pair with the basal half of the first joint 
yellowish-white; palpirufous © 2. 6 ee ee ee ee rutila, v. d. Wulp. 
1. Tanypeza claripennis. 
Tanypeza claripennis, Schiner, Dipt. Novara Reise, p. 247. 46°. 
Hab. Mexico, Orizaba (H. H. Smith & F. D. Godman), Xucumanatlan and Omilteme, 
both in Guerrero, Cuernavaca in Morelos, Teapa in Tabasco (H. H. Smith) ; Costa 
Rica, Volcan de Irazu 6000 to 7000 feet (ogers).—Braziu?}. 
A series of specimens of both sexes. They agree perfectly with Schiner’s description. 
The abdomen of the male is clothed with long hairs laterally and on the underside ; 
these hairs are mostly black or brown, sometimes clearer; the hypopygium is black, 
with a silvery-white dust on the upperside; the brownish markings of the legs are 
not always distinct ; the hind tibiz have the extreme apex and a ring before it yellow; 
the hind border of the very minute tegule is densely beset with yellow hairs. 
2. Tanypeza rutila, sp.n.,3¢ 9. (Tab. IX. fig. 15, ¢.) 
Rufous ; front black, with silvery-white spots; tarsi black, the front pair with the proximal half of the first 
joint whitish. 
Length 7 millim. 
