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



4. 0. heydcniuna, Saus?. 



Periplaneta heydeniana, Saussure, Rev. Zool. (2) xvi, 



p. 317 (1864). 

 Poly:ostcria heydeniana, Saussure, Mem. Soc. Sci. 



Pliys. Nat. Geneve, xx, p. 25G (1869). 

 Periplaneta marginifera, Walker, Cat. Blatt. Brit. 



Mus., p. 144 (1868). 



West Australia, Kin<^ George's Sound (British Mns., 

 typo oi marginiferec; Oxford Mus.; Geneva Mus., type of 

 heydeniana; Paris Mus.), Albany (Maniburo; Mus.). 



5. C. mlilloti, Bel. 



P()ly::osteria sedilloti, Bolivar, Ann. Soc. Eat. France 

 (6) ii, p. 459 (1882). 



In the $ the posterior angles of the posterior abdominal 

 tergiles are rounded and they are not much produced 

 in the $. 



New Zealand (coll. Bolivar, type ; Oxford Mus.). 



6. C. hrnnni, Alfk. 



Platyzosteria hrv.nni, Alfken, Abh. Ver. Bremen, 

 xvii, p. 142 (1901). 



Known to me only from the description. It is 

 apparently to be distinguished by its small size, but it must 

 be noted that sedilloti itself varies considerably in size, a 

 specimen in the Oxford Museum from the North island of 

 New Zealand being smaller thaii s])eciinens from the 

 South island. 



Chatham Is. (Bremen Mus., type). 



Genus 6. ZoNIOPLOCA, Stal. 



Zonioploea, Stfd, Bib. Svcnsk. Akad. ii (l.S),p. Ki (1874). 

 Kiie-pliasia, Topper, Tr. R. Soc. S. Australia, xvii, 

 p. 99 (1898). 



Gliaraders. Ocelli absent. Lateral margins ol' pronotum 

 incrassated. Dorsal siu'face granulate, or with sliallow punctures. 

 Tegniinal rmliments absent. Posterior angles of abdominal tergites 

 5-7 strongly produced. Supra-anal lamina, {^) quadrate, angles 

 obtuse, lateral margins entire, ( $ ) triangular, apex emarginate. 

 Sub-genital lamina ((J) trapezoidal, styles lateial. Posterior 



