44) MANBIBULATA. ORTHOPTERA. 



having a ridge on one side, whence the young larvae escape. The 

 indigenous species are divisible into the following genera: — 



Pulvilli intra ungues nulli : . . . . .14. Blaberus. 



conspicui : 



TarsorMTO art", basali reliquis longiori : ... \b. Blatta. 



breviori: . . .16. Ectobius. 



Head greenish-brown; antennae dusky; thorax livid, with irregular fuscous 

 spots ; elytra also livid, elegantly veined longitudinally, and thickly adorned 

 from before the middle with raised transverse lines, placed somewhat irre- 

 gularly ; these lines are broadly fuscous, and produce a variegated appear- 

 ance ; the base is plain in colour, but is ornamented with a longitudinal 

 fuscous streak on the angle of the elytra, and a curved one extending to the 

 suture, before the middle ; the body beneath and legs are slightly testa- 

 ceous. 



This fine insect, which is a native of Madeira and the adjoining islands, has 

 been frequently taken in London, but like the other species of the genus is 

 not indigenous. 



Sp. 2. Americana. Ferruginea, thoracis clypeo posticc fascia exalbida, elytris 

 alisque abdomine longioribus, apice rotundatis. (Long. corp. 1 unc. 5 — 8 lin.) 



Bl. Americana. Linni. — Shaw, Gen. Zool. v. vi.pl. 4<1 (!) — Steph. Catal. 304. 

 No. 3355, note. 



Ferruginous ; head with a whitish spot on each side between the antennae ; 

 eyes dusky; thorax with a waved whitish fascia on the hinder margin 

 (which is a little sinuated), sometimes emitting a branch on each side, 

 which extends round the entire margin, and a second in the middle, forming 

 a longitudinal streak, and united to the other two on the anterior edge, 

 leaving only two large ferruginous spots on the disc ; elytra of a brownish 

 tinge, prettily veined, and with the interstices transversely strigose ; the 

 apex rounded ; abdomen paler, with the terminal segment rounded in the 

 male, and glabrous, carinated and pilose in the female, its apex furnished 

 with two processes of about fourteen joints, and also the usual styles ; legs 

 pale testaceous ; femora and tibiae with dusky spines. 



Found occasionally in warehouses and outbuildings, by the side of the Thames, 

 especially below London Bridge ; it is a native of America, and has evi- 

 dently been brought into this country, and is consequently not an indigenous 

 production. 



Sp. 3. orientalis. Ferrugineo-fusca, thorace concolore, elytris alisque abdomine 

 brevioribus, apice subtruncatis ; {(£mina aptera elytrorum rudimento. (Long, 

 corp. 8 — 14 lin.) 



Bl. orientalis. Linne.— Wuod, Gen. v. i. pi. 31. — Stej^h. Catal. 304. No. 3353, 

 note. 



