78 



with numerous irregular testaceous dots, ventrally with two rows 

 of pale dots. Supra-anal lamina entire. Cerei short, testaceous. 

 Styles black, apex testaceous. 



Length of body (female) ... ... 18-21 mm. 



Habitat. — West Australia." 



PoLYZOSTERiA INVISA, Walker (ibid, 162). 



" Elliptical, black, dull, extremely thickly and minutely punc- 

 tured ; beneath metallic green, smooth, more coarsely punctured. 

 Pronotum truncate in front, sides scarcely reflexed, hindmargin 

 slightly undulating. Hind angles of meso- and meta-notum 

 rectangular. Abdomen with a row of impressions on each side, 

 fifth and sixth segment slightly gibbous in the middle, with an 

 impression on each side. Coxas bordered testaceous. Supra-anal 

 lamina truncate, margins yellow. Cerci fusiform, border and 

 underside yellow. Styles yellow. 



Length of body (male) ... ..." ... 30 mm. 



Habitat. — Australia." 



PoLYZOSTERiA MiTCHELLi, Augas (S. Austr., 111., plate 48, fig. 1). 



Broadly to elongate oval, finely wrinkled, dull greyish-blue to 

 greenish-brown ; beneath almost uniformly whitish to yellow. 

 Head pale, with a black band uniting the eyes, and continued 

 downwards, the mouth (sometimes reduced or almost obsolete), 

 two dark stripes down the face, often united at the upper end, 

 sometimes joined to the transverse band, or wholly absent. 

 Antennae of male blackish ; of female usually yellow. Pronotum 

 more or less arched in front, semicircular (male) or elliptical 

 (female), lateral margin slightly incrassated, broad, flat; disk 

 with a wider or narrower oblique yellow submarginal stripe, 

 between this and the middle a similar, much narrower and 

 shorter one, and a slight impression or two near the anterior ex- 

 tremity of the latter ; hindmargin straight (male) or slightly 

 curved (female), narrowly yellow, hindangles rounded. Meso- 

 and meta-notum similar, hindangles slightly produced, subacute, 

 the inner spots sometimes abbreviated, and with a small brown 

 centre. Abdomen without pale lateral margin (excepting the 

 supra-anal lamina), the inner or submarginal yellow spots con- 

 tinued to, and joining, the pale margin of the lamina (in some 

 varieties contiguous and broad, as those from Eyre's Sandpatch, 

 Eucla, Ooldea ; in others much contracted and short as those from 

 Sedan, Eraser Range, or only present to the second or fourth 

 segment) ; hindmargin pale yellow, equally wide throughout, or 

 wider in the middle, and bordered brownish, as the examples from 

 Ooldea. Supra-anal lamina of male truncate, uiore or less 



