106 



Habitat. — Australia." 



This species belongs probably to the Chorisoneuridce. 



Periplaneta convexa, Walker (ibid, SuppL, 152). 



" Black, smooth, shining, convex, elliptical. Palpi piceous ; 

 antennae setaceous, much longer than the body. Pronotum 

 shortly conical. Elytra coriaceous, convex, extending a little 

 beyond the body, costa and apex rounded ; covered portion of 

 right one memhranous, slightly paler. Wings resembling mem- 

 branous part of elytra, slightly longer. Cerci hrocd, short. 

 Female (size not given). 



Habitat. — Moreton Bay, Queensland." 



The italicized parts of the description indicate that the species 

 scarcely belongs to this genus. 



Of the following species the descriptions have not been avail- 

 able. Walker places the first two with P. Americana in his 

 Sect. 1 ; they will therefore be long-winged forms ; the third 

 is possibly synonymous with Pseudophgllodromia HeydeniayiOy 

 Sauss., in fasc. 2 Mem. Soc. Phys. de Geneve, 1870. 



Periplaxeta marginalis, Saussure. 



Rev. Zool., 1864, No. 30 ; Mel. Orth., 31. 

 Habitat. — Queensland, Western Australia ( ?^<7^^'er). 



Periplaneta sorar, Saussure (il)id, no. 35). 

 Habitat. — Australia. 



Periplaneta Heydeniaxa, Sauss. (Rev. Zool., 1864, Nov. 29). 

 Habitat. — West Australia. 



c. Elytra lobiforin or absent. Body mostly black, con- 

 colorous. Cerci not twice as long as lamina. Valvules 

 normal. Subgenus Syntomaptera, mihi, 



Periplaxeta fortipes, Walker (Brit. Mus. Cat., 137). 



" Black, fusiform, shining, very thickly and minutely punc- 

 tured. Head smooth, sockets of antennae, labium and palpi 

 piceous ; antennae dark-red, basal part black, as long as the body. 

 Pronotum with a very shallow lateral furrow, hindmargin 

 straight. Elytra absent. Legs stout, reddish-black, tarsi red 

 towards the apex. Abdominal segments six and seven with 

 angles produced, acute. Supra-anal lamina truncate. Cerci 

 long, lanceolate. 



Length of body (both sexes) ... 22-27 mm. 



Habitat. — West Australia, Tasmania, New Zealand." 



