BLATTARI^. 



95 



§§ A13B aiiticEe costa fere recta. 

 X. Alap anticae costa non albida. 



o. Facies fuha. _ _ - 



00. Facies nigra. - - - 



XX. Alse anticae costa albida, 



o. Prolhorax anlice albo marginatus. 

 00. Prolhorax anlice albo non luarginalus. 

 ** Alse abdomen paullo superautes. 

 t Alae anticae apice attenualae. 

 ft Alae antics apice vix attenuatae. 

 *** Alae abdomen non superantes. 

 f Prolhorax non punclalus. 



{ Prothoracis latera valde dilatata. 

 1^ Prothoracis latera subdilatata. 

 JJJ Prothoracis latera non dilatata. 

 -ft Prothorax conlertim punctatus. 

 **** Alae abdouiine breviores. 



f Prothorax pallidus. - - - 



ft Prothorax niger, pallido marginalus. 

 b. Caput magnum, protboracera sat superans. - 



opaca. 

 santarema. 



vilricnsla. 

 parvula. 



vilrifera. 

 isomorpha. 



conjuncla. 



incisa. 



parilis. 



apicifera. 



plalysoma. 



discalis. 



variegata. 



The fullowing group of five species is allied to De Saussure's first 

 section of Blatta, and is distinguished by the coriaceous fore wings, which 

 resemble the elytra of Coleoplera, and have no anal furrow. 



Mas. Corpus fusifonne, convexum, nitens. Caput latum, prothoracem 

 sat superans. Oculi latissinie disjuncti. Antenna corporis longitudine. 

 Prothorax antice truncatus ; latera subdilatata, subrotundata ; niargo pos- 

 ticus vix convexus. Abdominis lamina subanalis Integra. Cerci longi, 

 lanceolati. Pedes breves, robusti ; tibiae subspinosze. Alae anticae coriaceae, 

 subfusiformes, sulco obliquo antemedio, costa basi subdilatata. 



Male. Body fusiform, convex, shining. Head broad, extending 

 somewhat beyond the prothorax. Eyes very far apart. Antennas stout, 

 pubescent, as long as the body. Prothorax thickly and minutely punctured, 

 truncated in front; sides slightly dilated and rounded; hind border hardly 

 rounded. Abdomen with the subanal lamina entire. Cerci long, lanceo- 

 late. Legs short, stoul; til)iaD with a few slight spines. Wings extending 

 much beyond the abdomen. Fore wings coriaceous, subfusiform, thickly 

 and minutely punctured, with an oblique antemedial impression; costa 

 slightly dilated for one-fourth of the length from the base. 



Type, R. dermestoides' 



60. Blatta dekmestoides. 



Mas. Luteo-rufa aut ctrvina, sublus nigricans ; palpi lutei, apice nigri ; 

 antenncB nigrce, luleo bifasciatce ; prolhorax lateribus margineque 

 poslico nitidis hgalinis ; segmenlorum venlraiiuin lalera hasi pallido 

 marginata ; pedes picei,femoribus luteis, (arsis posticis teslaceis ; alec 

 anticce nigrcF, albido lineatce, costce dimidio basali albido hyalino ; 

 ula postic(e nigricantes. 



