330 CLASS VIII. 
Comp. MuIcEN, System. Beschr. der eur. zweifl. Ins, 11. p. 113, Tab. 16, figs. 
I—4. 
Leptis Fasr. Antenne porrect, with third joint setiferous. 
Palps exsert. Wings divaricate. Tarsi furnished with three pul- 
villi. Abdomen conical, elongate. 
Sp. Leptis scolopacea, Musca scolopacea L., SCHELLENB. Tab. 31, Fig. 1, 
Dumsér. Cons. gén, s. l. Ins. Pl. 48, figs. 1, &c. The larva (Boucué 1. 1. 
p. 44, Tab. Iv. fig. 1) lives under ground, and is long and conical. That 
of another species from France and the South of Europe, Leptis vermileo, 
Musca vermileo L., SCHELLENB., 1. 1. fig. 2, digs, like the larva of the Lion- 
ant, funnel-shaped pits in the sand to catch the insects that fall in. See 
ReaumMUR Mém. de l’Acad. royale des Se. de Paris, 1753, fig. 402, Pl. 1; 
Der GEER Jns. VI. pp. 168—183, Pl. x; Romanp Ann. de la Soc. Entomol. 
II. 1833, pp. 498, 499, Pl. 18 ¢. 
Sub-genera; Atherix Mric., Psiolina Stxc., ZETTERST. 
Thereva Larr., Mec. (Bibio Far.) Palps sheltered in the 
cavity of the mouth. Antenne porrect, of the length of the head, 
with third joint subulate or oblongo-conical, with a small biarticu- 
late terminal style. Wings divaricate. Abdomen conical, tomentose. 
Sp. Thereva plebeia L., Dumér. Consid. gén. s.l. Ins. Pl. 48, fig. 2; Ther. 
anilis, Musca anilis L., Panzer Deutschl. Ins. Heft 5, Nos. 23, &e. 
Philocephala ZEYTERST. 
Mydas Fase. (Midas Witeprem.) Antenne longer than head, 
quinquearticulate, clavate. Wings incumbent. (Ocellus single, at 
least in some, frontal, transverse, situated between two exsert 
ruge.) 
Sp. Midas filata Fasr., Dumir. Cons. gén. s. l. Ins. Pl. 48, fig. 8; Midas 
giganteus WiEDEM., Cuv. R. Anz. éd. ill. Ins. Pl. 172, fig. 2, both from 
South America. The species, with the exception of a few from Portugal, 
are all exotic and very large. 
Comp. WIEDEMANN, Nov. Act. Acad. Ces. Leop. Carol. Xv. 2, pp. 1g— 
56, Tab. 11.—1v, 1831, WESTWOOD Arcana entomologica, 1. 1841, p. 49, 
Pl. 13, 14. Respecting the place of this genus in the natural arrangement 
there are different opinions. According to the observations of HaRRIs, 
the larva and pupa agree with those of Aszlus. 
Note.—Genus Cephalocera Latr., related to Mydas, differs from 
the other genera of the family by a long, porrect, slender proboscis, 
yet it ought not to be severed from Mydas. 
myn 
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