DIPTERA. 485 
1. Admontia occidentalis. 
Admontia occidentalis, v. d. Wulp, Tijdschr. voor Ent, xxxv. p. 195°. 
Thorax grey, with four black stripes; abdomen black, with white front-margins to the segments ; antenne 
and legs black; palpi rufous. 
Length 6 millim. 
Head whitish-grey, without silvery reflections ; inferior portion of the cheeks with a slight rufous tint; hind 
orbits more purely white ; front broader than the eyes ; frontal band blackish ; frontal bristles descending 
as far as the tip of the second antennal joint; beneath them a row of short bristles on the cheeks ; above 
the vibrissee four bristles on the facial ridges; beard white. Antenne elongate, descending to the oral 
margin ; the basal joints and the proximal portion of the third joint somewhat rufous, this joint for the 
rest blackish. Thorax whitish-grey ; thoracic dorsum with four distinct black stripes; scutellum 
triangular, flattened, blackish, with the hind-margin grey. Abdomen shining black, the seginents with 
white front-borders and with discal and marginal macrochete, the marginal ones longer than the others. 
Legs black; tibize with scattered bristles; front tarsi (in Q ) one and a half times as long as the tibi, 
with the second and following joints dilated. Tegule whitish. Wings hyaline, with a dilute brownish-grey 
tint; small cross-vein before the middle of the discal ecll; curvature of the fourth vein rounded ; apical 
cell ending nearly in the wing’s tip; posterior cross-vein slightly curved inwards, a little beyond the 
middle between the small cross-vein and the curvature of the fourth vein. 
Hab. Mexico 1, Sierra de las Aguas Escondidas in Guerrero 9500 feet (H. H. Smith). 
Two females *. 
ARGYROPHYLAX (to follow the genus Admontia). 
Argyrophylax, Brauer and v. Bergenstamm, Denkschr. Akad. Wissensch. Wien, lvi. p. 163 (1889) ; 
lviii. p. 343; Ix. p. 121. 
1. Argyrophylax albincisa. (Tab. XIII. figg. 19; 194, head in profile; 
19 6, head from in front.) 
Tachina albineisa, Wiedem. Aussereur. zweifl. Ins. il. p. 334°. 
Hab. Mexico, Amula in Guerrero 6000 feet (ZH. H. Smith). —AntTILuss, St. Thomas !. 
A single female specimen of this species has been received from Mexico. The front 
is broad, black, but in some lights it appears silvery-white ; the frontal band is linear 
and inconspicuous, though recognizable by a row of weak and short frontal bristles. 
Professor Brauer, who has seen our Mexican insect, states that it is identical with 
the typical specimens in the Vienna Museum. 
DEGEERIA (p. 150). 
12. Degeeria nigrifacies. 
Oplisa nigrifacies, Bigot, Ann. Soc. Ent. Fr. 1888, p. 268°. 
Degeeria longipes, antea, p. 155°. 
I have seen a typical example of Bigot’s species, which also was from Mexico. One 
* [The single specimen returned by the author has been almost entirely devoured by an Anthrenus.— Eb. | 
BIOL. CENTR.-AMER., Dipt., Vol. I., May 1903. or 
