684 CATALOGUE OF 



subapical band ; bind tibiae bright red, a little shorter than tbe hind 

 femora ; spines pale yellow, with black tips. Fore wings cinereous, much 

 shorter than the body; veins ferruginous. Hind wings pellucid; veins 

 black, tawny towards the base and along the interior border. Length of 

 the body 20 lines ; expansion of the fore wings 34 lines. 



a. Para. Presented by Sir E. Home. 



19. CALOPTENUS ALIENUS. 



Mas. Ferrugineus, robustus, breviusculus, subtus rufus ; caput et pro- 

 thorax scabra ; caput breve, fastigio fere semicirculari ; antenna 

 pice&i basi rufuscentes ; prothorax vix carinatus, postice lalescens, 

 margine postico excavato ; prosterni spina brevis, robusta ; femora 

 poslica lata^ abdomine paullo longiora, exlus nigricantia ; tibice 

 posticce virides, basi ferruginece ; alee minima. 



Male. Ferruginous, stout, rather short, red beneath. Head and pro- 

 thorax scabrous. Head short; tip flat, nearly semicircular; front erect; 

 keels distinct; inner keels parallel ; outer keels slightly diverging towards 

 the face. Eyes subelliptical, flat on the fore side, much rounded on 

 the hind side. Antennae piceous, reddish at the base, as long as the pro- 

 thorax. Prothorax widening hindward ; middle keel hardly perceptible ; 

 lateral keels slight ; transverse impressed lines distinct; fore border hardly 

 rounded ; sides slightly rounded ; hind border excavated. Prosternal 

 spine short, stout. Hind femora broad, a little longer than the abdomen, 

 blackish on each side, excepting the ridges ; hind tibiaa green, ferruginous 

 towards the base, a little shorter than the hind femora; spines white, their 

 tips black. Wings rudimentary. Length of the body 7 lines. 



a. Quito. Presented by W. Hewitson, Esq. 



East Africa, Egypt, and Arabia. 



A. Fore wings with markings. 



a. Body stout. 



* Tip of the vertex hexagonal. - testaceus. 

 ** Tip of the vertex conical. ... - discoidalis. 



*** Tip of the vertex linear. - - scriptipennis. 



#*** Tip of the vertex nearly linear. 



f Prosternal spine not transverse. - - serapis. 



ft Prosternal spine transverse. - - concisus. 



b. Body slender. 



* Tip of the vertex subhexagonal. 



f Prosternal spine not transverse. ... signatus. 



j-f Prosternal spine transverse. turbidus. 



** Tip of the vertex elongate, rounded in front. - - mutator. 



B. Fore wings without markings. - cincticollis. 



The species of Egypt and Arabia here described differ somewhat from 

 the typical form of Caloptenus, and have an affinity to Heteracris, and C. 

 mutator is especially allied to the latter genus. 



