BLA-TTARIiE. 37 



Periplaneta MARGINALIS. 

 ligata, C. D. i. 150. 



Periplaneta soror. 

 flavicincta, C. B. 131. 



Periplaneta orientalis. 

 Blatta badia, C. B. 87. 



Periplaneta affinis. 

 affinis, Sauss. Mkm. Soc. Phys. Gen. xx. 261. 

 Hindostan. 



Periplaneta emittens. 



Mas. Nigra; antennee ferrugineee ; prothorax annulo strigisque duabus 

 longitudinalibus luteis; pectus luleum ; venter fulvus ; pedes fulvi, 

 tibiis tarsisque piceis ; alee anticee piceee, postice ferrugineee, abdomen 

 longe superantes, striga subcostali lutea lanceolata subcostali. 



Male. Black, shining. Head about the mouth and pectus luteous. 

 Antennae ferruginous. Prothorax widening and nearly straight on each 

 side from ihe fore border to near the hind border, where the sides are 

 rounded; hind border slightly rounded; a luteous ringlet including the 

 disk, near and parallel to the borders, broadest along the hind border, 

 where it emits a lanceolate branch towards a similar branch on its fore 

 side, the rudiments of a stripe. Abdomen beneath ; coxae and femora 

 tawny; tibiae and tarsi piceous. Fore wings piceous, extending much 

 beyond the abdomen, broadly ferruginous along the inner border, with a 

 subcostal luteous lanceolate streak extending along one-fifth of the length 

 from the base. Length of the body 11 — 11£ lines; expansion of the fore 

 wings 27—28 lines. 



More slender than P. inclusa, to which it has some resemblance. 



a. St. Helena. Presented by J. C. Mellis, Esq. 



Periplaneta monochroma. 

 Mas. Testacea, fusiformis ; caput piceo uninotalum ; prothorax lilura 

 discali scutiformi ; pedes graciles y selulosi ; alee abdomen longe 

 superantes ; alee posticee diaphanee. 



Male. Testaceous, slender, fusiform, smooth, shining. Head with a 

 piceous mark between the sockets of the antenna?. Eyes black, remote. 

 Antenna? slender, longer than the body. Prothorax a little broader than 

 long ; fore border much rounded ; sides slightly rounded ; hind border 

 straight; fore part of the scutcheon on the disk rounded, much broader 

 than the hind part, which has two straight sides converging towards the 

 straight hind border. Legs slender, beset with short stiff hairs. Wings 



