458 SUPPLEMENT. 
eyes; vibrissee very weak and not longer than the hairs by which they are accompanied; occiput 
inferiorly swollen. Eyes bare. Antenne obliquely exserted; basal joints short and nearly equal in 
length; third joint much longer; arista on the upperside towards the end with a microscopic pubescence. 
Proboscis shorter than the head; palpi slightly thickened towards the tip. Thorax quadrate, densely 
haired, but without macrochets, except at the sides. Abdomen cylindrical, of equal breadth over its 
whole length, posteriorly curved downwards, the segments indistinctly separated ; macrochets marginal 
and very short ; male-genitalia somewhat developed and turned towards the venter. Legs hairy and with 
scattered bristles; foot-claws and pulvilli elongate in the male. Tegule rather small. Wings longer 
than the abdomen ; apical cell closed and petiolated, its petiole bent upward ; curvature of the fourth 
vein rectangular and with a short appendage, which, however, is sometimes absent ; posterior cross-vein 
at a short distance from the curvature of the fourth vein. 
1. Penthosia satanica., (Tab. XIII. figg. 18; 18a, head.) 
Scopolia satanica, Bigot, Ann. Soc. Ent. Fr. 1888, p. 254°. 
Penthosia satanica, v. d. Wulp, Tijdschr. voor Ent. xxxv. p. 190”. 
Iintirely deep black, including the antenne, oral parts, legs, tegule, and wings. 
Length 11-12°5 millim. 
Head velvety-black, the oral margin and the ocellar prominence only are shining ; sides of the front and of the 
face with silvery-white reflections. Third joint of the antenne five times as long as the second. Thorax, 
scutellum, and abdomen shining black, the abdomen with a metallic tint; ventral side densely pilose in 
the male. Pulvilli yellowish-grey. Tegule and wings brownish-black ; a small somewhat hyaline spot 
immediately behind the inferior basal cell ; apical and posterior cross-veins distinctly curved. 
Hab. Muxtco!2, Rio Papagaio, Tierra Colorada, Rincon, Acaguizotla, Xucuma- 
natlan, and Omilteme in Guerrero, Teapa in Tabasco (H. H. Smith), San Blas in 
Jalisco (Schumann). 
A long series, including both sexes. One of our specimens has been compared by 
Bigot himself with his type of Scopolia satanica, and there can be no doubt of the 
identification of the species. The insect is not a Scopolia in the sense of Robineau- 
Desvoidy, the author of the genus, nor in that of Schiner (‘ Fauna Austriaca’). It is not 
even a true Tachinid, but seems to belong, with Ancylogaster and Clinogaster, to the 
Phanine. All three of them may be included in the Group XXXIX., Schineride, of 
Brauer and v. Bergenstamm (Denkschr. Akad. Wiss. Wien, lvi. p. 140). They agree 
in having an elongate, curved abdomen, long, slender, and more or less exserted 
antenne, and rudimentary or feebly-developed vibrisse and abdominal macrochete. 
Ancylogaster has the apical cell opened and the eyes descending to near the inferior 
part of the head. In Clinogaster and Penthosia the apical cell is closed and petio- 
lated, and the eyes are remote from the underside of the head. In Penthosia the 
second joint of the antenne is scarcely longer than the first, and the third nearly five 
times as long as the second ; in Clinogaster the second joint is much longer than the 
first, and the third joint no more than twice as long as the second; moreover, the 
thorax of Clinogaster shows distinct macrochete, whilst that of Penthosia is densely 
pilose and without bristles, | 
(Mr. Townsend (Ann. & Mag. Nat. Hist. (6) xix. p. 32 (1897) has recorded 
P. satanica from San Rafael, Vera Cruz.—Eb. | 
