the Orthoptera in the British Museum. 151 



almost flat; median keel sharp, low, in profile practically straight, 

 scarcely cut by the transverse sulci; metazona slightly shorter 

 than the prozona; lateral keels obtuse and low, but distinct, 

 straight, strongly divergent backwards, cut by narrow sulci ; hind 

 angle of the disc very obtuse, but not at all rounded ; lateral lobes 

 with the lower margin rotundato-angulate in the middle. Prc- 

 sternal tubercle distinctly longer than broad, slightly widened 

 towards the apex, which is rotundato-truncate. Mesosternal 

 interspace in the male not wider than long, in the female sub- 

 quadrate. Elytra well developed. Wings faintly coloured at the 

 base, slightly infumate towards the apex. Hind femora not at 

 all incrassate and scarcely dilated, strongly narrowed and attenuate 

 apically; the lower carina not at all dilated, regularly convex. 

 Hind tibiae straight. 



^. The last tergite dilated, with the hind margin incrassate and 

 somewhat recurved and rotundato-emarginate. Supra-anal plate 

 broader than long, trapezoidal; median sulcus fine, but very 

 distinct, not widened basally ; two big chitinous tubercles sideways 

 of the sulcus, before the middle of the plate; lateral margins rotun- 

 dato-sinuate ; hind angles slightly attenuate, sharp; hind margin 

 somewhat concave, with a short median projecting lobe. Cerci 

 hook-shaped ; the basal part a little broader than the apical, which 

 is strongly laterally compressed ; the apex obliquely truncate. 

 iSubgenital plate obtusely conical. 



9. iSubgenital plate scarcely longer than broad, with the apex 

 truncate, and with two small, obtuse lateral lobes. 



Genotype : Calliptamus semiroseus Serv. 



It is a very peculiar genus with the hind femora slender 

 for a member of the group Calliptamini. The shape of 

 the male genitalia, however, leaves no doubt that it 

 belongs here. 



Only two species are known at present and they both 

 are represented in the Museum collection. 



1. Calliptamicus semiroseus (Serv.). 

 (Plate I, figs. 7 and 8.) 



1839. Calliptamus semiroseus Serville, Ins. Orth., p. 692, 



no. 7. 

 1860. Acridium {Calliptamus) hottentofvm Stal, Eug. Resa, 



Orth., p. 337, no. 90. 

 1870. Cahptenus semiroseus, var. Walker, Cat. Derm. 



Salt. B. M., p. 691, no. 32. 



