TETTIGID^i. • 819 



length beyond the abdomen. Legs rather slender; hind femora stout; 

 hind tibiae without spines. Fore wings rudimentary. Hind wings cine- 

 reous, hyaline, with a black costal stripe; exterior border festooned, 

 blackish. Length of the body 8£ lines; expansion of the hind wings 

 14£ lines. 



a. Sierra Leone. Presented by the Rev. D. F. Morgan. 



39. Tettix jugata. 



Fcem. Picea, robusta, subscabra ; oculi subprominuli ; antenna basi 

 rufescentes ; prothorax fortiter carinatus, antice angulatim productus 

 verticem superans, postice lanceolatus, abdomen paullo superans ; tibia 

 postica spinosa ; ala postica cinerea, apud costam nigra. 



Female. Piceous, stout, slightly scabrous. Head much narrower 

 than the prothorax, nearly hidden above by the angular fore border of the 

 prothorax, which projects over it like a hood ; a keel extending from the 

 vertex, parted into two between the antennae, united in the fore part of the 

 front, forked towards the face. Eyes slightly prominent. Antennae very 

 slender, reddish towards the base; two short exterior keels in the fore part 

 of the front. Prothorax with a well-defined keel, which is highest towards 

 the fore border; two slight lateral keels, diverging from the first transverse 

 impressed line, converging from thence to the tip ; hind part lanceolate, 

 extending a little beyond the abdomen and the hind femora. Hind femora 

 very thick; hind tibia? with short spines. Fore wings rudimentary. Hind 

 wings ample, cinereous, black along the costa. Length of the body 7 lines ; 

 expansion of the hind wings 12 lines. 



a. Natal. From Iff. Gueinzius' collection. 



40. Tettix subpustulata. 



Mas. Picea, gracilis, carina dorsali bene determinata ; prothorax scaber, 

 carinis lateralibus antice disjunctis, postice lanceolatus, abdomen 

 longe superans ; tibia postica spinulosa, basi fulva ; ala postica 

 diaphana. 



Male. Piceou<=, slender. Head and prothorax with a well-defined 

 keel, which is divided into two keels on the front, and again united near the 

 face, where it is forked. Prothorax scabrous, with two lateral keels, which 

 are dislocated in the fore part and converge from the base of the fore wings 

 to the tip; hind part lanceolate, compressed, extending for more than one- 

 third of its length beyond the tip of the abdomen. Legs moderately stout ; 

 hind tibiae with minute spines, tawny towards the base. Hind wings 

 pellucid, extending somewhat beyond the abdomen; veins black Length 

 of the body 4£ — 5 lines ; expansion of the hind wings 12 — 13 lines. 



a, b. South Africa. Presented by Sir A. Smith, 

 e, d. Natal. From M. Gueinzius' collection. 



