BLATTARl.E. V21 



Sect. 10. 



The pvoihorax lias Iwo oblique furrows, like the Ischnoptera, but in 

 other cliiuaclers the following species is more allied to Blalta. The more 

 prominent head and the shorter wings distinguish it from the 9lL section. 



40. Ischnoptera quadriplaga. 



Mas. Tcstacea, fusiformis ; caput prolkoracem sat sttperans, vertice nigra 



punclalo ; oculi non approximali ; antennce nigrce, graciUinia, 



corpore longiores ; prolhorax bifoveolatus, lateribus albidis dia' 



phaiiis subreflexis, margine postico fere redo; pedes graciles ; alee 



anlicce subcoriacea, nigrieayite quadriplagiata, abdomen louge 



superantes ; alee poslicce pallide cinerece, venis pallide teslaceis. 



Mule. Testaceous, fusiform, smooth, shining. Head extending 



somewhat beyond the prothorax, with two black points on the vertex. 



Eyes black, moderately wide apart. Antenuae black, very slender, minutely 



setulose, longer than the body. Prothorax conical ; the whitish and 



pellucid sides increasing in breadth hindward; disk black, with an obliqie 



furrow on each side; fore border hardly truncated ; sides rounded, sli;;l)\ly 



reHexed ; hind border almost straight. Cerci lanceolate, long. Logs 



slender; femora with slender spines. Wings extending much beyond ilie 



abdomen. Fore wings somewhat coriaceous; veins elevated; four large 



blackish subquadrate patches in the disk, two near the base and two in the 



middle; costa very slightly rounded. Hind wings pale cinereous; veins 



pale testaceous. Length of the body 5 lines ; of the wings 12 lines. 



a. Mauritius. From Dr. Beke's collection. 



4L Ischnoptera robiginosa. 



Foem. Picea, fusiformis ; caput prothoracem perpaullo sttperans, 

 margine antico palpisque teslaceis ; prothorax lateribus stibrejlexis 

 margineque antico testaceis ; pectoris segmenta testaceo marginata ; 

 pedes tesiacci ; ales anticce subcoriacece, vitta costali testacea abbre- 

 viala ; alee posticce saturate cinereee^ nigra venosce. 



Female. Piceous, fusiform, smooth, shining. Head extending very 

 little beyond the prothorax ; fore border and sockets of the anteniicE les- 

 laceous. Palpi testaceous. Antennae setose, testaceous at the base. 

 Prothorax testaceous-bordered on each side and in front, where it is 

 narrower and slightly truncated; sides rounded, slightly reflexed ; hind 

 border hardly rounded. Pectoral segments testaceous-bordered. Cerci 

 lanceolate, long, stout. Legs testaceous, rather slender; femora with stout 

 spines. Wings extending much beyond the abdomen. Fore wings some- 

 what coriaceous, with a testaceous costal stripe, which begins near the base 

 and extends to three-fnurths of the length; costa very slightly cur\ed; 

 anal furrow distinct. Hind wings dark cinereous ; veins blackish. Length 

 of the body 5 lines; of the wings 12 lines. 



a. Santaieni. From Mr. Bates' collection. 



