Mr. R. Shelford's Studies of the, Bla.ttidac. 297 



Queensland (British Mus., type of quadrifascia, ; Ox- 

 ford Mus.; Melbourne Mus.) ; South Australia, Northern 

 territory (British Mus., type of pectoralis ; Oxford Mus. ; 

 Adelaide Mus., type of trifasciata ; Melbourne Mus.), 

 Port Essington (British Mus., type of zooiata ; Oxford 

 Mus). 



3. C. maculimarginata, Tepp. 



Platyzosteria maculima'i'ginata, Tepper, Tr. R. Soc. 

 S. Australia, xix, p. 160 (1895). 

 Known to me only from the description; it may be only 

 a varietal form of the preceding. 



N. Queensland (Adelaide Mus., type). 



4. C. hicolor, Sauss. (PI. IX, fig. 33.) 



Polyzosteria hicolor, Saussure, Rev. Zool. (2) xvi, p. 

 307 (186i); Mem. Soc. Sci. Phys. Nat. Geneve, 

 XX, p. 259 (1869). 



Polyzosteria ligata, Brunner von Wattenwyl, Nouv. 

 Syst. Blatt., p. 220 (1865). 



Platyzosteria suhzonafa, Tepper, Tr. R. Soc. S. Aus- 

 tralia, xviii, p. 181 (1894). 



This is another species that in coloration is very 

 variable ; the form suhzonata has the posterior margins of 

 the thoracic tergites narrowly bordered Avith ochreous 

 but is otherwise indistinguishable from the type form. 

 Structurally the species differs from C. zonata, Walk., as 

 follows : — The abdomen is less scabrous, none of the 

 abdominal tergites or sternites are laterally serrate, the 

 posterior angles of the 7th abdominal tergite are scarcely 

 produced, the supra-aual lamina (,^) has minute, non- 

 deflexed spines at the posterior angles, ($) with the margins 

 entire. 



" Australia " (Geneva Mus., type of hicolor) ; Queens- 

 land (Oxford Mus.), Port Curtis (Vienna Mus., type of 

 ligata), Stradbrooke Is. (coll. Froggatt) ; Victoria (Ade- 

 laide Mus., type of suhzonata) ; New South Wales, 

 Darling river (Oxford Mus. ; Melbourne Mus.). 



5. C. gloriosa, sp. n. 



9 . Dark castaneons ; thoracic tergites with large triangular 

 flavid blotches situated near tlieir posterior angles. Abdominal 



