414 DIPTERA. 
2. Kutreta patagiata, sp.n.¢ 9. (Tab. XII. fig. 10, wing.) 
Brown; head, pleure, and legs rufous; wings broad, fuscous, with numerous clear dots, small whitish spots 
on the margins, and a white apical border. 
Length 5°5 millim. 
Closely allied to the preceding (Z. sparsa), but differing from it in having a row of hyaline spots along the costal 
two of which are between the ends of the first and second veins; the wings broad, less rounded at the 
tip, the clear dots somewhat larger and less regular, the white apical border broader, ‘its inner edge 
straighter and perpendicular. 
Hab. Mexico, Omilteme and Sierra de las Aguas Escondidas, both in Guerrero, 
8000 to 9500 feet (H. H. Smith). 
Four specimens, two of each sex. This species seems also to be allied to Lcaria 
distincta, Schin. (Diptera Novara Reise, p. 276), from South America; but Schiner’s 
description of the wings is not quite applicable, as he mentions four hyaline costal spots 
between the first and second veins. 
The generic name Jcaria, Schin., was published in 1868, and thus would have 
priority over Eutreta, Low; Icaria, however, was preoccupied (Saussure, 1853). 
ACROTAENIA. 
Acrotenia, Low, Monogr. Diptera N. Amer. ili. p. 274 (1873). 
The type of this genus is Trypeta latipennis, Wiedem. ‘The three Mexican species 
referred to it cannot be identified from any of the published descriptions. 
1. Central portion of the wings fuscous, with numerous very small hyaline dots ; 
on the costa a double row of black spots; first joint of the front tarsi 
enlarged inthe male . . . . . cee ee . . . tarsata,v.d. W. 
Central portion of the wings fuscous, with less numerous but somewhat larger 
clear dots ; no black costal spots; front tarsi not dilated . . . . » 2. 
2. Stigma with two clear dots; the whole surface of the wings, except the base 
and the tip, fuscous, with clear dots . . . . . . . . . « « . « apiata,v. d. W. 
Stigma without clear dots ; the fuscous coloration of the central portion of 
the wings interrupted by some incisions at the costa, and by a large oblique 
hyaline spot at the posterior margin. . . . . «© . . . . . ©) .) Oimeisa, v. d. W. 
1. Acrotenia tarsata, sp.n.,¢. (Tab. XII. figg. 11, wing; 11 a, fore tarsus.) 
Head, thorax, scutellum, and legs yellowish-rufous ; abdomen brown; wings broad; a double row of black 
costal spots; the central region fuscous, with numerous small hyaline dots; the apical portion yellow, 
with hyaline incisions ; first joint of the front tarsi (in the male) enlarged and black at the tip. 
Length 4 millim. 
Front as broad as the eyes, slightly narrower anteriorly ; frontal and postvertical bristles yellow; face shorter 
than the front; oral margin slightly prominent; cheeks narrow. Antenne ochraceous; third joint 
elongate-oval, reaching beyond the middle of the face. Thoracic dorsum yellow-pollinose and with 
yellow hairs; pleure, scutellum, and metanotum ochraceous; the scutellum with four Jong bristles, 
