HYLEMY1A.—PHORBIA. 339 
Hab. Mexico, Sierra de las Aguas Escondidas in Guerrero 7000 feet (H. H. Smith). 
A single male specimen. 
CHORTOPHILA. 
Chortophila, Macquart, Suites & Buffon, Dipt. ii. p. 323 (1835). 
This genus is closely allied to Anthomyia (in its restricted sense) and also to 
Hydrophoria. From the former it differs in the more cylindrical abdomen of the male ; 
from the latter in the bare arista; and from both in the smaller tegulz, of which the 
under scale is wholly covered by the upper. 
In the Central-American collections there is a specimen of a species which seems to 
belong to this genus; but as it is represented by a female individual only, it would be 
of doubtful value if I described it. I may remark, however, that the insect is quite 
different from C. stlemba, Gigl.-Tos (of which also the female sex only is known); it 
bears a close resemblance to the female of Hydrophoria collaris (anted, p. 333), 
though differing from the latter in several characters. 
1. Chortophila ——? 
Hab. Mexico, Medellin near Vera Cruz (H. H. Smith). 
PHORBIA. 
Phorbia, Robineau-Desvoidy, Essai sur les Myodaires, p. 559 (1830). 
The characters of this genus are: eyes bare, contiguous or subcontiguous in the 
male ; arista bare; abdomen elongate, usually flattened, the first segment longer than 
the second; tegule equal, the lower scale covered by the upper; anal vein elongate, 
more or less distinctly reaching the border of the wing. 
I have distinguished three Mexican species, which are described as new :— 
1. Eyes of the male separated by a linear, whitish front; abdomen not hairy . . morosa. 
Eyes of the male contiguous; abdomen hairy . . - + + + + s+ e+ © + 2. 
2. Tegule and wings brownish . . . «© 2. 1 ee ee ee ee es fuscisquama. 
Tegule whitish; wings greyish . . . 2. ee 6 © © © © © © # 2 prisca. 
1. Phorbia morosa, sp. n., 3. 
Cinereous ; head whitish, with linear front; abdomen with a black dorsal stripe, not hairy; antenne, palpi, 
and legs black ; tegule whitish; wings greyish-hyaline. 
Length 3°5 millim. 
Front linear, white, with a black median line ; face and cheeks whitish, the inferior part of the latter very 
narrow. Antenne black, inserted above the median line of the eyes; second joint with minute bristles ; 
third joint three times as long as the second; arista thickened in its basal half. Proboscis and palpi 
black. Thorax and scutellum cinereous, the thorax with indistinct stripes. Abdomen elliptical, flattened, 
cinereous, the second and following segments with a black dorsal stripe, which is sometimes dilated into 
trigonal spots ; some weak macrochwte at the sides and on the anal segment. Legs black, proportionally 
short; foot-claws and pulvilli not elongate, the pulvilli yellowish. Tegule whitish; halteres yellow, 
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