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



tergit-es sometimes rather paler than the disc. Antennae rufescent. 

 Thoracic tergites smooth, impunctate. Abdominal tergites rather 

 scabrous. Supra-anal lamina, ( ^ ) quadrangular, angles spiniform, 

 deflexed, posterior margin straight, surpassed by sub-genital lamina 

 which is quadrate, posteriorly widely emarginate, angles spiniform, 

 with styles lateral, ( 9 ) trigonal, sub-cucullate, apex rounded not 

 emarginate, margins faintly crenulate. Cerci (mutilated in ^) 

 barely exceeding the supra-anal lamina ( 9 )• Coxae margined with 

 ochreous, posterior metatarsus short. 



Length ((^) 25 mm., (?) 27 mm. ; pronotum 8 mm. x 12- 

 13 mm. 



Queensland, Lolworth (coll. Froggatt, type $), Peak 

 Downs (Stockholm Mus,, type ^). 



The $ $ are paler than the male. 



2. C. zonata, Walk. (PL IX, ligs. 31, 32.) 



Polyzosteria zonata, Walker, Cat. Blatt. Brit. Mus., 



p. 159 (1868). 

 Polyzosteria quadrifascia, Walker, t. c, p. 160 (1868). 

 Polyzosteria pectoralis, Walker, t. c, p. 160 (1868). 

 Platyzosteria trifasciata, Tepper, Tr. R. Soc. S. 



Australia, xvii, p. 91 (1893). 



Piceous {quadrifascia) or castaneous (zonata). Anterior margin 

 of pronotum ochreous (quadrifascia) or unicolorous with disc 

 (trifasciata) ; posterior margins of thoracic tergites narrowly or 

 broadly (zonata) ochreous. Thoracic tergites minutely punctate 

 with some smooth spaces. Dorsal surface of abdomen scabrous, 

 posterior angles of 2nd to 5th tergites not produced, of 6th slightly 

 produced, of 7th strongly produced, of 9th lobiform ( c? ) or spiniform 

 ( $ ) and sometimes orange in colour. Lateral margins of 7th 

 tergite serrate, more strongly in ^ than in ^ • Abdomen beneath 

 finely scabrous, lateral margins of 7th sternite ( ^ ) denticulate, of 6th 

 sternite ( 9 ) serrate. Supra-anal lamina, ( ^ ) quadrate, posteriorly 

 non-emarginate and rufo-fimbriate, posterior angles produced as 

 strong, deflexed spines, ( 9 ) triangular, cucullate, apex emarginate, 

 laterally serrate. Sub-genital lamina ( (^ ) trapezoidal, posteriorly 

 widely emarginate, exceeding the supra-anal lamina, posterior 

 angles spinously produced, styles lateral. Cerci orange or piceous 

 exceeding the supra-anal lamina ( ^ ) but not the sub-genital lamina, 

 acutely pointed. Coxae margined with testaceous. 



Length {^) 21 mm., (9) 25"5 mm.; pronotum 6'5-7'5 mm. 

 X 10-131 mm. 



