bi, att a rle. 151 



Periplaneta Okba. 

 Orba, Stal, Ofv. K. V. Ak. Fork. 1856, 167. Walt. Blatl. 240. 

 Natal. 



Periplaneta picea. 

 picea, Watt. Blatt. 224. 

 Isle of Sambelong. 



Periplaneta rhombifolia, C. B. 130. 

 decorata, Watt. Blatt. 224. 



Periplaneta ornata. 

 ornata, Watt. Blatt. 235. 

 Hindustan. 



Periplaneta rotundata. 



rotundata, Watt. Blatt. 231. 



Fiji Isles. 



Periplaneta aterrima. 



Mas. Atra, fusiformis, nilens, subtilissime punctata ; caput parce 

 punctatum, prothoracem perpaullo superans ; oculi invicem remoti : 

 prothorax longiusculus,foveolis nonnullis indeterminatis ; abdomen 

 apice incisum, segmentorum angulis poslicis productis acutis ; pedes 

 subtus fimbriali, femoribus posticis supra spina apicali armatis ; alee 

 anlicce cornea, apices versus coriacece, abdomen paullo superanles ; 

 alee posticw coriacew. 



Male. Deep black, fusiform, shining, very thickly and minutely 

 punctured. Head thinly punctured, extending very little beyond the pro- 

 thorax ; sockets of the antenna? whitish. Eyes piceous, wide apart. Pro- 

 thorax much longer than half its breadth, with some shallow excavations 

 in the disk; fore border truncated, about one-fourth of the length of the 

 hind border; sides rounded; hind border straight. Hind angles of the 

 abdominal segments elougated, acute; supra-anal lamina and subanal 

 lamina notched, the former fringed with tawny hairs ; styles long, slender. 

 Cerci lanceolate, long, stout. Legs long, robust; femora and tibiae fringed 

 beneath with short hairs ; femora armed with long stout spines : hind 

 femora with a stout apical spine above. Wings extending a little beyoud 

 the abdomen. Fore wings corneous, coriaceous towards the tips. Hind 

 wings coriaceous. Leugth of the body 18 lines; of the wings 34 lines. 



Peru. In Mr. Saunders' collection. 



