96 



Leptozosteria, gen. nov. 



Etymology : — •Ze/;^os=thin ; zostron, a girdle. 



Body very fiat and thin, elongate. Integument soft. Supra- 

 anal lamina of male triangular, terminating in an acute apical 

 spine. Colour pale, with dark bands. 



The form and termination of the supra-anal lamina appear to 

 be quite exceptional among the Blattarife. Similarly unusual in 

 the related genera is the pale ground-colour with the bands dark, 

 instead of the reverse, which is the usual coloration. I have 

 therefore considered it advisable to establish the genus pro- 

 visionally for the reception of the single s^^ecies until further 

 material offers a better base for its final disposition. 



Leptozosteria prima, spec. nov. 



Elongate oval, yellowish. Head dark dusk-brown, ocelliform 

 spots yellowish, very small. Pronotum elliptical in front, disk 

 with a black quadrilateral figure, widest anteriorly, extending 

 along the hindmargin, and including a yellowish four-sided 

 space, Meso- and meta-notum similar, with a very narrow brown 

 marginal line, hindangles rounded, scarcely produced. Elytra 

 none. Legs brown, very flat, coxi^ bordered pale. Abdomen 

 above with the hindmargins of segments one to six black or dark- 

 brown, segment seven paler, angles produced, acute, lateral 

 margin of the last two segments finely serrate ; ventral segments 

 piceous, laterally dark, disk paler. Supra-anal lamina dark- 

 brown, Cerci slightly longer than lamina, gradually acuminate. 

 Subgenital lamina of male with the styles stout at the base, 

 remainder slender, acute, 



Male. 

 Length of body ... ... ... ... 29mm. 



Length of thorax ... ... ... 15 " 



Length of abdomen ... ,,. ... 14 " 



Length of pronotum ... ... ... 8 " 



Width of pronotum ... ... ... 12 " 



Width of abdomen 15 " 



Habitat. — Cordilho Downs, Central Australia. S,A, Museum. 

 This fine specimen was captured and presented by Mr. F. 

 Archer in August, 1889. 



Pseudolampra, gen. nov. 



Body fusiform (narrow in front, broad behind), very convex 

 above, more or less rugose, with impressed dots. Pronotum 

 elliptical, hindmargin concavo-convex or nearly straight. Elytra 

 and wings none. Legs long, slender ; tarsi elongated as in 

 Polyzosteria. Supra-anal lamina of male transverse, almost 



