346 DIPTERA. 
legs, and even the palpi, yellowish. This latter may be a recently emerged and 
not fully-coloured specimen. All have the characteristic blackish bands on the 
thorax. 
SCHGENOMYZA. 
Schenomyza, Haliday, Ent. Mag. i. p. 166 (1888). 
This genus differs from Cenosia in having smaller tegulx, of which the under scale 
is wholly covered by the upper. I refer a minute Mexican species to it. 
1. Schenomyza pulicaria, sp.n., 3. (Tab. VIII. fig. 18.) 
Cinereous; four stripes on the thorax, three pairs of spots on the abdomen, antenna, palpi, and legs black. 
Length 2 millim. 
Front black, a little narrower than the eyes; face and cheeks whitish-grey ; inferior part of the cheeks broad, 
equalling nearly half the longitudinal diameter of the eyes ; oral margin not prominent, with two distinct 
vibrisse ; underside of the head with some bristly hairs. Antenne black; second joint with a small 
bristle; third joint three times as long as the second; arista bare. Proboscis and palpi black. Thorax 
and scutellum cinereous ; thoracic dorsum with four equidistant blackish lines ; pleure greyish. Abdomen 
elliptical, obscure cinereous, the incisions somewhat clearer ; the second, third, and anal segments each 
with two quadrangular black spots, which, however, are not very distinct; anal segment with some weak 
macrochete. Legs black, slender, the tarsi longer than the tibie, the front knees slightly rufous; foot- 
claws and pulvilli short. Tegule whitish; halteres yellow. Wings greyish-hyaline ; small cross-vein 
beyond the end of the first vein and a little beyond the middle of the discal cell; third and fourth veins 
slightly curved and parallel; terminal section of the fourth vein more than twice as long as the 
penultimate section ; posterior cross-vein perpendicular and straight. 
Hab. Mexico, Omilteme in Guerrero 8000 feet (H. H. Smith). 
A single male specimen. 
' The following Mexican species of Anthomyine have been previously described, but 
cannot be identified in the Central-American collections which I have examined :— 
Hyetodesia rescita, Walk. Trans. Ent. Soc. Lond. n. ser. v. p. 315 (Aricia). 
circulatriz, Walk. 1. c. p. 316 (Aricia). 
parsura, Gigl.-Tos, Mem. R. Accad. Scienze di Torino, ser. 2, xlv. (sep.) 
p. 20. 
abdicta, Gigl.-Tos, 1. c. p. 21. 
insons, Gigl.-Tos, 1. c. p. 21. 
Mydea abdita, Gigl.-Tos, 1. c. p. 23 (Spilogaster). 
etesia, Gigl.-Tos, 1. c. p. 23 (Spilogaster). 
meracula, Gigl.-Tos, |. c. p. 24 (Spilogaster).. 
Spilogaster refusa, Gig). Tos, }. c. p. 22. 
sera, Gigl.-Tos, l. c. p. 25. 
scabra, Gigl.-Tos, 1. c. p. 25. 
