Mr. R. Shelford's Studies of the Blattidae. 281 



of shallow punctures on the dorsal surface, the rufo- 

 castaneous tegminal rudiments, the supra-anal lamina 

 with entire margins and non-emarginate apex, 



" New Holland " (Vienna Mus., type). 



30. P. fseudocastmua, Tepp. 



Plcdyzosteria 2yscudocastanca, Tepper, Tr. R. Soc. 

 S. Australia, xvii, p. 89 (1893). 



Known to me only from the description; it appears to 

 difi'er from castanea, Br., by the imicolorous coxae, and 

 the scabrous supra-anal lamina {^) with dentate lateral 

 margins and emarginate apex. 



S. Australia, Tanunda, Ardrossan (Adelaide Mus., 

 type). 



81. P. ccratodi, Kr. 



Polyzosteria ccratodi, Krauss, Denkschr. med.-nat. 

 Ges. Jena, viii, p. 751 (1903). 



Known to me only from the description. 



Queensland, Burnett (Semon) (Jena University Mus., 

 type). 



32. P. glabra, Walk. 



Periplancta glabra, Walker, Cat. Blatt. Brit. Mus., p 

 139 (1868). 



^ . Piceous, uitid, impinictate, rather broad. Tegminal rudiments 

 present and completely articulated. Supra-anal lamina quadrate, 

 depressed in middle, lateral margins entire, posteriorly widely 

 emarginate, exceeded by the cerci. Sub-genital lamina widely 

 emarginate, a short blunt spine at the base of the long genital styles. 

 Posterior margin of 7th abdominal tergite not dentate. Coxae not 

 bordered with testaceous. 



Length 20 mm.; pronotum 7 mm. x 10"9 mm. 



"Australia" (British Mus., type). 



This species in its general facies closely resembles 

 Outilia nitida, Br., but can readily be distinguished from 

 that by its tarsal structure. 



