250 
REPORT ON ZOOLOGY, MDCCCXLII : 
the new genus differs by the wing-veins, elongated legs, fifteen-jointed 
antennae and five-jointed palpi. The representation of a pair of broad 
dentated mandibles, serrated internally, originates in an error ; at least 
they are wholly without example in this division of the Diptera. The 
species, A . fasciata, is from Albania. 
Zeller (Isis, p. 800) has described the larva of the Penthetria holose- 
ricea ; it is found on moist land, under the grass, fallen leaves, &c. It 
is long, black, with four rows of spines above directed backwards, four 
rows of small adpressed spines beneath, and a black shining head ; it 
changes in April into a black spinous nympha. He has (ibid. p. 811) 
united Bihio clavipes, Mg. {Johannis, F., ephippium, Zell.), as the male 
to B. dorsalis and jlavicoUis, Mg, B. fulvicollis, Gimmerthal (Bull. 
Mosc. 663), appears to be a variety of this species. 
Tabanidje. — Zeller (Isis, p. 812) has made some valuable remarks on 
the species observed by him. He also describes several new ones ; Ta- 
hanus sudeticus, very near the T. hovinus ; T. tricolor, a very pretty 
species from South Russia ; Chrysops parallelogrammus, like the Chr. 
relictus. Zetterstedt (Dip. Scand.) has described several new Swedish 
species : Tabanus latifrons, atricornis, flaviceps, nigricornis, nigerrimus, 
maculicornis, subhmaticornis. The reporter (Arch. 1842. i. p. 273) has 
described three new species from Van Diemen’s Land : Tabanus exulans, 
gregarius, gentilis. 
Asilid^. — Zetterstedt (1. c.) has enriched this family with three 
new species : Laphria lapponica, formerly considered as a variety of 
the L. rufipcs, from which it differs by the black fore-legs, and in other 
respects ; from the south of Lapland. Dasypogon luteicornis, from the 
south of Sweden. Leptogaster cultriventris, found in Sweden and Den- 
mark. 
Lampria claripennis (!), Le Guillou (Rev. Zool. p. 314), is also a new 
species, from Triton Bay. 
Midasidje. — Harris (Ins. of Massachusetts, p. 406) has given some 
information on the natural history of these insects. The larva and pupa 
generally resemble those of the Asili. The former is cylindrical, nar- 
rowed anteriorly, rounded posteriorly, and lives in rotten wood. In the 
latter, the abdomen terminates in a forked point, the head has eight 
horns, and round each ring there is a series of small teeth, directed 
backwards, though at first they point forwards. The fly is described 
as being predatory. 
XvLOPHAGiiDiE. — Drowsen (Kroyer Naturh. Tidsskr. iv. p. 103) has 
remarked, that the larva of Xylophagus ater does not live on wood, but 
is predatory; and that the larva of Pyrochroa coccinea and Tipulce, 
especially, were attacked by it. 
Leptid^. — Zetterstedt (Dipt. Scand.) has introduced a new genus into 
this family : Ptiolina, Stag., for the species of Atherix, with the last 
294 
