20 ORTHOPTERA 



Characters. — Head large and broad, the vertex broad, rounded, declivate ; Antennas situated 

 distinctly below the eyes, nearer the clypeus than the top of the head. Eyes convex, but little prominent. 

 Pronotum scarcely as broad anteriorly as the head, with distinct lateral and median carinas on the pos- 

 teri i portion, the lateral lobes subvertical, distinctly longer than high: presternum inconspicuousl} 

 bispinose Abdomen large and plump, roughened ; supraanal plate of (J 1 rounded ; subgenital plate of rjf 

 truncate, of 9 emarginate; cerci of cf short, thick, conical; ovipositor nearly as long as the abdomen, 

 very slightly curved upwards and smooth. 



Wings concealed beneath the pronotum; legs short, the hind femora not saltatorial and short, 

 scarcely longer than the pronotum. 



Type. — Locusta dasypus. Illiger. 



Geographical distribution of species, — Europe. 

 i. B. dasypus, Illiger, Wiedem. Arch.Zool. (2), Vol. 1, p. 144(1 800) (Locusta). Servia, Bulgaria, Rouma- 

 — Plate I, Fig. 10. nia, etc. 



2. Genus CALLIMENUS, Fischer von Waldheim 



Calli menus. Fischer von Waldheim, Notice sur le Tettigopsis, p. 14 (i83o); Kirov, Syn. Cat. Orth. 



Vol. 2. p. 175 (1906); Shuguroff, Rev. Russe d'Ent. p. 176 (1906). 

 Callimus. Fischer von Waldheim, Bull. Moscou, Vol. 6, p. 374 (i833). — A misspelling. 



Characters. — Very similar to the preceeding genus. Having no specimens for study a detailed 

 description is necessarilly omitted. The rather unsatisfactory illustration of the type species by Jacobson 

 & Bianchi shows the vertex as apparently narrower than in Bi adyporus and the median carina of the 

 pronotum less distinct. 



In his original establishment of this genus the author specifially indicates the type as Locusta onos 

 Pallas. His subsequent designation as type the Callimeuus obesus 1) is thus invalidated. 



Type. — Gryllus onos, Pallis. 



Geographical distribution of species. — Asia. 



1. C. onos, Pallas, Spic. Zool. Vol. 9, p. 17, pi. n, f. 1 (1772) (Gryllus); Mongolia, Transbaikal. 



Fischer von Waldheim, Notice sur le Tettigopsis, p. 14 (i83o). 



2. C. cmctus, Fischer von Waldheim, Bull. Moscou, Vol. 6, p. 376 (i833) Siberia. 



(Deracantha) ; Orth. Ross. p. 192, pi. 9, f. 1 (1846) (Echippiger) . 



3. Genus DERALLIMUS, nov. gen. 



Characters. — Differing from the preceeding genera especially by the ovipositor being 

 shorter, or scarcely longer, than the pronotum (Plate 1, Fig. 8) and from the succeeding genera of 

 the group by the shape of the eyes which in this genus are convex and but little prominent while in the 

 following genera they are globose and very prominent. 



This genus is proposed for the several species listed below, of which the Locusta armadillo of 

 Thunberg is designated as the geneotype. Callimus could be used for these species were it not for the 



i) Ann. Soc. Ent. France, Vol. 2, p. 3i8 0833). 



