Mr. R. Shelford's Studies of the Blattidae. 2i31 



grey sericeous pile more or less worn along the middle line. Body 

 subtectiforin. Dorsal surface scabrous. Frons concave and rugosely 

 punctate. Antennae ochreous. Pronotum anteriorly cucullate, 

 anterior margin sub-sinuate. Body beneath ochreous outwardly 

 margined with castaneous, apex of the abdomen castaneous. Cerci 

 ochreous. Supra-anal lamina, ( ^ ) sub-quadrate, ( 9 ) produced, cucul- 

 late, apex emarginate. 9th abdominal tergite backwardly produced 

 at its outer angles to form two blimt processes, outwardly margined 

 with ochreous. Coxae testaceous with a castaneous stripe, femora, 

 tibiae and tarsi castaneous with a metallic tinge. Femora beneath 

 and tibial spines testaceous. Femoral spines very small. 



Length {^) 30-34 mm., ( $ ) 40-44 mm. ; pronotum 10-11 "5 mm. 

 X 20-25 mm. 



West Australia (Oxford Mus. ; Hamburg Mus. ; 

 Melbourne Mus. ; Adelaide Mus., type). 



8. P. oculata, Tepp. 



Polyrosteria (sic) oculata, Tepper, t. c, p. 75 (1893). 



Dull bronze above with irregular rows of flattened tubercles. 

 Stigmatic dots very prominent. Laterally witli faint indications of a 

 sericeous pile. Cerci and supra-anal lamina edged with ochreous. 

 Head rugose, frons not concave. Antennae castaneous at base, 

 remainder fuscous. Underside of thoracic tergites orange. Abdo- 

 men beneath castaneous with metallic sheen, the iinderside of the 

 lateral margins of the 7th abdominal tergite brilliant metallic 

 green. Supra-anal lamina, ( (J ) quadrate, posteriorly widely emar- 

 ginate, ( $ ) produced, broad, deejjly emarginate. Sub-genital lamina 

 ( (J ) sub-quadrate ; styles stout, incurved, their apices acuminate. 

 Posterior angles of 7th abdominal tergite very strongly produced 

 backwards, angles of 9th tergite as in P. pubescens. Coxae margined 

 with ochreous ; femora castaneous, tibiae dark metallic green, spines 

 ochreous tipped with rufous. 



Length {(^ and $) 31 mm. ; pronotum 9*3 mm. x 19 mm. 



South Australia; Victoria (Oxford Mus.; Mel- 

 bourne Mus., ^ type ; Adelaide Mus., $ type) . 



9. F. invisa, Walk. 



Folyzosteria invisa, Walker, Cat. Blatt. Brit. Mus., p. 

 162(1868). 



Ovate and depressed. Dark purplish above ; finely rugose-punc- 

 tate, not tuberculate. Posterior margin of supra-anal lamina, 



