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



tergites sometimes rather paler than the disc. Antennae rufescent. 

 Thoracic tergites smooth, impiinctate. Abdominal tergites rather 

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

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

 which is quadrate, posteriorly widely emarginate, angles sjiiniform, 

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

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

 barely exceeding the supra-anal lamina ( J ). Coxae margined with 

 ochreous, posterior metatarsus short. 



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

 13 mm. 



Queensland, Lolworth (coll. Froggatt, 1-ype ^), Peak 

 Downs (Stockholm Mus., type %). 

 The ^ ^ are paler than the male. 



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



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



p. 159 (1868). 

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

 Polyzosteria 2)ectoralis, Walker, t. c, p. 160 (1868). 

 Pleityzosteria trifasciata, Te]iper, Tr. R. Soc. S. 



Australia, xvii, p. 91 (1893). 



Piceous (qnadrifascia) or castaneous (zundta). Anterior margin 

 of pronotum ochreous ((puidrifa.scia) or unicolorous with disc 

 {trifasciata) ; posterior margins of thoracic tergites narrowly or 

 broadly {::unata) ochreous. Thoracic tergites minutely punctate 

 with some smootli spaces. Dorsal surface of abdomen scabi'ous, 

 ])osterior angles of 2nd to .0th tergites not produced, of (Jtli slightly 

 produced, of 7th strongly proiluced,ot' 9th lobiform ( (^ ) or spiniform 

 (9) iiiid sometimes orange in colour. Lateral margins of 7tli 

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

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

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

 non-emarginate and rufo-timbriate, posterior angles pnxluced as 

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

 laterally serrate. Sub-genital lamina (J) trapezoidal, ])osteriorly 

 widely emarginate, exceeding the supra-anal lamina, ])osteriiir 

 angles spinously produced, styles lateral. Cerci orange or piceous 

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

 acutely pointed. Coxae margined AV'ith testaceous. 



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

 X 10-1.31 mm. 



