ACRIDIDJi!. 689 



28. Caloptenus mutator. 



Mas et fcEin. Fulvus, graciles ; caput et prothorax vitlis dnahus pallide 

 flavis nigra submarginatis ; fastigium louguin, planum, antice 

 roiundatum ; anlennce fulvm, aut. picece, aut nigricanles ; pruthorax 

 subtiliter scaler, disco subtricarinato fere piano ; prostcrni spina 

 C7-assa, transversa, albida aul fulva, non attenuata; femora postica 

 abdomini cequilonga, extus gutlis nigris bivitlata aut nigra plagiata, 

 intus nigricante biplagiata ; tibice posticce testacece aul rxifce, nigra 

 bifasciatce ; alee anticce pallide cinerece, abdomini aquilongce, maculis 

 gultisque plurimis obscure cinereis nigra venosis. 



Male and female. Tawny, slender. Head and prothorax with two 

 pale yellow slightly black-bordered stripes which are lanceolate between 

 the eyes. Head smooth ; tip of the vertex flat, elongate, rounded in front; 

 front very thinly punctured, with four slightly-defined keels which diverge 

 towards the face. Eyes elongate-elliptical, with more or less distinct brown 

 lines. Aoiennse tawny, or piceous, or blackish. Prothorax finely scabrous; 

 disk nearly flat, with three very slight keels, the middle one black; trans- 

 verse impressed lines distinct; fore border nearly straight ; sides slighllv 

 rounded; hind border rounded. Proslernal spine whitish or lawny, trans'- 

 verse, thick, not narrower towards the lip, which is rounded. Hind femora 

 as long as the abdomen, with two large blackish patches on the inner side 

 and with two rows of black dots on the outer side; these marks are very 

 variable and sometimes the dots are replaced by patches; hind tibiaj pale 

 testaceous, rather shorter than the hind femora, with two black bands near 

 the base, sometimes partly or wholly red, their spines with black tips. 

 Fore wings pale cinereous, as long as the abdomen, with many dark 

 cinereous black-veined spots and dots; veins elsewhere whitish or testa- 

 ceous. Hind wings pellucid; veins black, pale testaceous towards the 

 base and along the interior border. Length of the body 10 — 18 lines* 

 expansion of the fore wings 18 — 30 lines. 



Egypt and Arabia. In Mr. Lord's collection. 



29. Caloptenus cincticollis. 



Mas et fcem. Fulvus; caput postice albidum ; fastigium subpentagonale 

 nonnunquam ferrugineum aut nigricans, frontis disco ferrugineo • 

 antennae nonnunquam picece; prothorax subtiliter scaber, fasciis 

 duabus latis piceis aut ferrugineis, margine antica vix incisa, marqine 

 postica valde rotunduto ; prosterni spina longa, crassa, apice rotun- 

 data ; femora postica abdomini cequilonga, fusca bifasciata aut tri- 

 fasciata, subtus atra ; tibia: posticce Jlava:, fascia nigra purpurea 

 rufoque marginata ; alee anticce pallide cinerece, abdomini cequi- 

 longcE. Var. (3 — Femora postica 7ion fasciata. Var. y. — Prothorax 

 non fasciatus . 



Male and female. Tawny. Head smooth, whitish about the hind 

 part; tip of the vertex flat, subpentagonal, some lines ferru"iuous or 

 blackish; front with a ferruginous disk; four slight keels which diverge 

 towards the face. Eyes ferruginous, elongate-elliptical, nearly strai"ht on 



