378 CLASS VIII. 
Leucospis FABR. Thorax gibbous, prothorax transversely quad- 
rate. Upper wings doubled longitudinally. Antenne with twelve 
or fifteen joints, incrassated at apex. Borer reflected above the 
back. 
Sp. Leucospis gigas Fasr., Kiuc., Panzer, Ins. Heft 84, Tab. 17, 18, Cuv. 
R. ani. éd. ill., Ins. Pl. 116, fig. 6. Leucospis intermedia Iuuie., Leue. 
dorsigera Panzur, Deutschl. Ins. Heft 15, Tab. 17, Dumérin, Cons. gén. 
8. 0. Ins. Pl. 34, fig. 2, &e. 
This genus contains species of 3 inch and more, whilst the smallest 
species are still more than 3 lines in size, so that it may be considered 
gigantic in this family of dwarfs. In HKurope species of Leucospis are 
found in the southern regions alone, principally in Italy. To the extrica- 
tion of the synonomy ILLIGER, KiuG, and lately WESTWOOD, have contri- 
buted: see the monograph of the last-named author, Hntomol. Magas. 1. 
Ds) 2102, 00cc. 
Family XXI. Jchneumonides. Wings four, veined, the anterior 
always furnished with complete cells. Maxillary palps distinct, 
elongate. Antenne mostly setaceous or filiform, long, with numer- 
ous joints. Body elongate, slender. Ovipositor straight, often 
exsert, bivalved, including a borer of three sete. 
Ship-wasps, Ichnewmons. We unite in this family the Jchneu- 
monides and Hvaniales of the systematic entomologists of recent 
times. Of many species the economy is yet unknown, yet of all 
whose mode of life has been observed the larve are found in other 
insects, and nearly always in the larve of these. They are especially 
caterpillars, the larvee of Lepidoptera, in which Ichnewmons lay 
their eggs ; the larvee of Hvania are parasites of the genus Blatta, 
and probably live, according to an observation of Mac Leay (related 
by Westwoop, /ntrod. to mod. Classif: of Ins. 1. p. 422) in the 
membrane of their eggs. 
Comp. on this family amongst others : 
J. J. TRENTEPOHL, Revisio critica generis Ichneumonis. OKEN’s Isis, 
1826, pp. 55—87, pp. 293—308. 
J. L. C. Gravennorstr, Ichneumonologia europea. Vratislavie, 1829, 
111. Vol. 8vo. 
Nees AB ESSENBECK, Hymenopterorum Ichnewmonib. afin. Monogra- 
phic. Volumen Tum. 
J. T. C. Rarzesurc, Die Ichnewmonen der Forstinsekten. Berlin, 
1844, 4to. 
Phalanx I. Ichnewmones. Abdomen inserted between the two 
posterior feet. Antenne mostly setaceous or filiform, composed of 
