687 



Male. Testaceous, stout. Head smooth ; tip of the vertex narrow, 

 linear, much excavated ; front thinly punctured, with four slightly-defined 

 keels which diverge towards the face. Eyes su belli ptical ; fore side 

 straight; hind side rounded. Prothorax finely scabrous, hardly widening 

 landward; disk nearly flat ; keel very slight; transverse impressed lines 

 slight; fore border very slightly rounded; sides rounded; hind border 

 much rounded. Prosternal spine thick, long, slightly acute. Hind femora 

 very broad, as long as the abdomen ; hind tibia? pale yellow, partly tinged 

 with red on the inner side, somewhat shorter than the hind femora, their 

 spines with black tips ; fore tarsi red. Fore wings pale cinereous, as long 

 as the abdomen, with numerous antemedial darker dots and with some 

 blackish postmedial slightly oblique bands ; veins whitish, tawny towards 

 the base. Hind wings with some dark cinereous transverse spots ; veins 

 mostly black. Length of the body 16 lines ; expansion of the fore wings 

 27 lines. 



Wady Ferran, Arabia. In Mr. Lord's collection. 



25. CALOPTENUS CONCISUS. 



Fcem. Testactus, robustus ; fastigium longum, depressum, fere lineare ; 

 prothorax subtilitsime scaber, disco tubtricarinato fere piano ; pro- 

 sterni spina albida, crassa, transversa ; femora postica latissima, 

 abdomine paullo breviora, ferrttgineo trifasciata ; ales anticce pallide 

 cinerea, abdomini cequilongce, maculis guttis punctisque obscure 

 cinereis piceo venosis. 



Female. Testaceous, stout. Head smooth ; tip of the vertex elongate, 

 nearly linear, much depressed, with a short keel on its hind part; front 

 thinly punctured ; inner keels nearly parallel, more defined than the outer 

 keels, which diverge towards the face. Eyes nearly elliptical, with ferru- 

 ginous lines, straight on the fore side, rounded on the hind side. Prothorax 

 very finely scabrous ; disk nearly flat, with three slight keels, the lateral 

 keels as determinate as the middle one and slightly curved outward ; trans- 

 verse impressed lines distinct; second and third undulating; third near 

 the fourth in the middle ; fore border very slightly rounded ; sides and hind 

 border much rounded. Prosternal spine whitish, thick, transverse, rounded 

 at the tip. Hind femora very broad, a little shorter than the abdomen, 

 with three ferruginous bands above ; hind tibiae rather shorter than the 

 hind femora, their spines with black tips. Fore wings pale cinereous, as 

 long as the abdomen, with many dark cinereous piceous-veined spots and 

 dots and points. Hind wings pellucid ; veins black. Length of the body 

 16 lines; expansion of the fore wings 28 lines. 



Zayla, E. Africa, near the Indian Ocean. In Mr. Lord's collection. 



26. CALOPTENUS SIGNATUS. 



Fo3m. Pallide luteus, sat gracilis ; vertex litura lanceolata picea,fastigio 

 longi-subhexagonali ; antenna apices versus supra picect ; prothorax 

 subtiliter scuber, plagis duabus maximis subquadratis luteo notatis 

 vittaque piceis t disco subtricarinato fere p/ano, margine antico vix 



