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



It differs in the following details which, though small, 

 appear to be constant : — 



Supra-anal lamina, {^) with apex rather deeply though narrowly 

 notched, the spines scarcely projecting but curved round close to 

 the lateral margins, ( 5 ) longer than breadth at base, apical emargin- 

 ation V-shaped, the apex of the V hlled up h\ membranous 

 tissue. Cerci shorter, til)iae and tarsi brighter castaneous. 



New South Wales (Oxford Mus.); Tarangower (Vienna 

 Mus.) ; Victoria, Narre Warren (Melbourne Mus.) ; 

 Western Australia, Swan River (British Mus.); "Bom- 

 bay " (British Mus. type of rujicornis). 



The type of analis appears to be lost; rvficornis is 

 absolutely identical with specimens in the Melbourne 

 Museum which differ only from Oxford Museum examples 

 in the castaneous margins to the thoracic tergites, castaneous 

 abdominal disc and brighter castaneous tibiae and tarsi ; 

 these are mere colour varieties structurally identical with 

 uniformly piceous specimens. The locality Bombay is 

 probably erroneous or the unique specimen was an accidental 

 importation from Australia. If it is eventually proved that 

 analis, Sauss., is strictly conspecific with mclanaria, Er., 

 then rvficornis, Walk., must be applied to this species. 



4. P. pscudairata, Tepp. 



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

 Australia, xvii, p. 86 (1893). 



Known to me only from the description, which applies 

 equally well to P. mclanaria and P. analis. 



Central Australia (Adelaide Mus., type). 



5. P. atcrrima, Er. (PI. VII, figs. 5 and 6.) 



Periplaneta aterrimct, Erichson, Arch. Naturg., viii, 



p. 248 (1842). 

 Pcrij)hmcta qlcdrra, Tepper, Tr. R. Soc. S. Australia, 



xvii, p. 107 (1893). 

 Sijntovia2)tcrcc te2)2Kri, Kirby, Ann. Mag. Nat. Hist. (7), 



xii, p. 374 (1903). 



Specimens of Syntomaptcra glcdjra determined by Tepper 

 in the Melbourne Museum are indistinguishable from 

 P, atcrrima, Er. I am again indebted to Dr. Kuhlgatz for 



