DERMAPTERA SALTATORIA. 61 



long as the abdomen ; hind tibiae a little shorter than the hind femora, 

 their spines with black tips. Fore wings cinereous, a little longer than the 

 body; veins testaceous; a few of the transverse sectors clouded with pale 

 brown. Hind wings pellucid ; veins whitish. Length of the body 15 

 lines; expansion of the fore wings 30 lines. 



a. Gambia. From Mr. Kendall's collection. 



ACRIDIUM CONTINUUM. 



Mas. Testaceum, gracile ; caput et prothorax fusco late univiltata ; 

 fastigium rotundatum ; antenna nigrce, basi testacece ; prothorax 

 fiavescente bivittatus, carinis tribus bene determinafis ; prosterni 

 spina robusta,fere eylindrica ; tibiae postica pallide flavescentes, basi 

 fulvo bifasciatce; ala anticce cinerece, viltis dual us e lituris nigro 

 venosis. 



Male. Testaceous, slender. Head and prothorax with a broad brown 

 stripe, which extends nearly to the tip of the vertex. Head short ; tip of 

 the vertex flat, rounded ; front erect, with four slight keels; inner keels 

 parallel ; outer keels diverging. Eyes fusiform. Antennae black, testaceous 

 at the base. Prothorax with three well-defined keels ; a pale yellowish 

 stripe on each side of the brown stripe ; transverse impressed lines strongly 

 marked ; fore border, sides and hind border very slightly rounded. Pro- 

 sternal spine stout, nearly cylindrical, rounded at the tip. Hind femora as 

 long as the abdomen. Hind tibiae pale yellowish, a little shorter than the 

 hind femora, with two tawny bands, one basal, the other near the base ; 

 spines black towards the tips. Fore wings cinereous, extending a little 

 beyond the abdomen, with two stripes of small marks, which are formed by 

 black veins, aud are indistinct towards the tips. Length of the body 

 16£ lines; expansion of the fore wings 32 lines. 



The prothorax is not contracted in front like that of A. peregrinum. 



a. Mount Sinai. Presented by R. M'Andrew, Esq. 



ACRIDIUM SUBPUSTULATUM. 



Mas. Fulvum, subtus testaceum ; caput et prothorax fusco late univittala ; 

 fastigium subpentagonale ; prothorax testaceo tuberculatus, plagis 

 duabus lateralibus transversis fuscis; prosterni spina transversa, 

 postice excavuta ; femora postica supra fusco tr'iplagiata ; tibia 

 postica subtus fusca ; ala antica cinerea, fusco plagiata. 



Male. Tawny, testaceous beneath. Head and prothorax with a 

 broad brown stripe, which tapers from the tip of the vertex to the hind 

 border of the prothorax. Head rather small; tip of the vertex transverse, 

 flat, subpentagonal ; front erect, with four strongly-marked diverging keels. 

 Eyes subfusiform. Prothorax narrower in front, with pale tubercles, and 

 with three slight keels, the lateral keels diverging hindward ; a large 

 brown transverse patch on each side; fore border slightly rounded ; hind 

 border more rounded; sides nearly straight. Prosternal spine stout, 

 transverse, tapering to the tip, excavated on the hind side. Hind femora 

 with three brown patches above, as long as the abdomen. Hind tibiae 

 almost as long as the hind femora, brown beneath ; spines very stout, with 



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