R" SHELFORD, 

 Polyzosteria Mitchellii (Angas). 



Blatta Mitchellii ANGAS, S. Australia Illustr., pi. 48, f. 1 (1847). 



Coll. Mus. Hamburg, Fremantle; W. WOLTING leg. 1907 (1 ?). 



Genus Platyzosteria Br. 



Platyzosteria ruficeps n. sp. 



Plate XIII, Fig. 3. 



<$. Piceous, nitid, impunctate. Vertex of head orange-rufous, antennae 

 flavid. Coxae, femora, cerci, supra-anal and subgenital laminae rufo- 

 castaneous. Tegminal rudiments absent. Supra-anal lamina subquadrate, 

 angles rounded, posteriorly emarginate, margins serrate, slightly exceeded 

 by the cerci. Lateral margins of 7 th abdominal tergite not serrate, its 

 posterior margin sinuate. Subgenital lamina subquadrate, posterior margin 

 slightly sinuate and finely dentate. Coxae bordered with pale testaceous. 

 Tibiae and tarsi piceous. Length 24 mm. ; pronotum 6.1 mm. X 10.1 mm. 



Stat. 88, Moor a (1 rf). 



Remark. The only species of the genus with rufous vertex. 



Platyzosteria invisa (Walk.). 



Periplaneta invisa WALKEK, Cat. Blatt. Brit. Mus., p. 137 (1868). 



Stat. 75, Gerald ton; Stat. 158, Broome Hill; Coll. Mus. Perth, 

 VMurchison district (hab. doubtful!). 



Platyzosteria atrata (Er.). 



Periplaneta atrata ERICHSOK, Arch. Naturg., VIII, p. 248 (1842). 

 Stat. 95, Bo or abb in (2 <J). 



Remark. The continental forms of this species frequently have 

 the thoracic tergites margined with rufous and the tibiae partly rufo- 

 castaneous. 



Platyzosteria consobrina (Sauss.). 



PolyxAsteria consobrina SAUSSITRE, Rev. Zool., (2) XVI, p. 306 (1864). 



Stat. 120, Fremantle, Haus und Garten (1 tf). 



Remark. The type of this species has been lost and it cannot now 

 be recognised with absolute certaintly: it may possibly be a larval form 

 of P. invisa WALK. 



