CORDAX. 



185 



Pronotum narrow and long, not so broad as the head. Elytra 

 smooth, well rounded at the shoulders, with no keel. Wmgs 

 generally well developed. Legs long and slender ; femora scarcely 

 thickened; tibiae compressed, first tarsal segment longer than 

 second and third united. Abdomen convex, rather dilated beyond 

 the middle, then tapering to the apex ; lateral tubercles well 

 developed. Last dorsal segment attenuate and sloping in both 

 sexes. Pygidium indistinct. Porceps of S long and slender, the 

 branches remote or subcontiguous at the base, straight or sinuate, 

 variously armed ; in $ straiglit, simple, contiguous. 



Range. Oriental Region. 



This new genus is erected for those species in which the pro- 

 notum is long aud narrow, as in OpistJiocosmia, but the last dorsal 

 segment narrowed and sloping, as in liyimrgm. The narrowing 

 of this last segment has always been regarded as the chief dis- 

 tinctive character of Opistliocosmia, but unfortunately in the type- 

 species, 0. centurio, this segment is very decidedly _ transverse. 

 Numerous species, formerly included in Ojnsthocosmia, are now 

 consequently removed to the newer genera, Cordax and Hyinirgus. 



Table of Species. 



1. Elytra orange or red, with narrow dark 



band; size medium (15 mm.) annatiis, Ilaan, p. 185. 



1.1. Elvtra testaceous, indistinctly banded 



■with fuscous ; size small (12-5 mm.) . . ceylonicus, Motsch., p. 186. 



118. Cordax armatus, Haan. (Pig. 6G.) 



Forficula armata, Haan, (42) p. 243, pi. 23 fig. 12. 

 Opisthocosmia armata, Dohrn, (65) p. S\; borm (^o P- ^*f' 

 (94) p. 394, (00-) p. 96; Burr, (99) p. 260, (04) p. 304, (O/i) 

 p. 100 ; Kirby, (04) p. 39. 

 General colour dark reddish chestnut ; abdomen red ; elytra and 

 wings red, with narrow dark bands. Antennae with (?) 10 seg- 

 ments, dark fuscous ; segments 8-9 whitish, very slender. Head 

 dark reddish, somewhat tumid, especially between the eyes. 

 Pronotum narrower than the head and longer than broad, dark 

 chestnut, smooth; anterior border truncate, sides subparallel; 

 hinder border and hinder angles rounded; prozona distinctly 

 tumid; metazona flat; sides distinctly raised. Elytra ample, 

 broadly rounded at the shoulders, the costal fold strongly marked, 

 almost forming a ridge ; brick-red, with a narrow dark band along 

 the costal margin, narrowed apically; hinder border subemar- 

 ginate. Wings long, of the same colour as the elytra. Legs very 

 dark, long and slender, the tarsi somewhat paler. Abdomen dark 

 red, blackish near the base and the apex ; very narrow at the 

 base and very convex, strongly attenuate near the apex ; phci- 

 form tubercles black, very strongly marked. Last dorsal segment 

 smooth, typical, sloping and attenuate. Forceps with the 



