79 



angular, shorter than the subgenital ; of female much narrower, 

 much arched, slightly emarginate. Cerci lanceolate, blackish 

 blue, apex yellow, exceeding the lamina. Subgenital lamina of 

 male broad, rounded, slightly emarginate; styles rather long, 

 slender, acute. Valvules of female much incrassated. Feniora 

 with two dark-brown lines, knees brown, spines small and few. 

 Tibiae sky-blue to white, spines black, each placed in a round 

 black spot. 



Male. Female. Larvae. 



Length of body ... 30 mm. 30-40 mm. 18 -28 mm 

 Length of pronotum 9 " 10 " 5*5- 8 " 



Width of pronotum 18-22 " 18-23 " 13 -18 " 



Width of abdomen... 18 " 21-24 " 12 -15 " 



Habitat. — Sedan (F. Rothe), about the Head of the Great 

 Australian Bight (Tate) : South Australia. Eyre's Sandpacth, 

 near Eucla (Mrs. Graham), Eraser Range, Victoiia Desert : 

 Western Australia (R. Helms., Elder Exploring Expedition). 

 S.A. Museum. R. Murray Plain (Angas). 



This is the most gaudy coloured of all Australian Blatterife I 

 have seen, and its adult form is well figured by Angas. The 

 lively colours ornamenting it during life soon fade, and become 

 dull after death, the bright blue changing to whitish or dusky 

 greenish-brown. The markings appear to denote several local 

 varieties, and are most distinct and brightest in the larvse, as well 

 as the ground-colour. The egg-case is dark-brown, smooth, with 

 a very high obliquely serrated dorsal ridge, the immature 

 specimen in the collection showing 12 teeth so far as exposed. I 

 observed the insects iSrst about October in 1859, in the vicinity of 

 Burra, running and hunting about on the ground, and sheltering 

 themselves when pursued in the dense rigid tufts of Lepidosperma 

 and Xerotes, from whence they could only be dislodged with con- 

 considerable difficulty. 



The description is drawn up from some 20 odd specimens. 

 Angas attached the name to the figure, but the species appears 

 not to have been diagnosed. 



POLYZOSTERIA BaGOTI, SpeC. IIOV. 



Broadly oval, dull green, rugose with irregular, low tubercles, 

 margins all round, also the hindmargins of all segments, narrowly 

 dull yellow, with dark dots or transverse striae. Head iridescent 

 to the bases of the antennae, beyond shining-brown ; antennae 

 brownish-yellowish, about half the length of the body, fourth 

 basal joint longest. Pronotum arched in front, and the fore- 

 margin slightly concave, very broad, somewhat convex behind. 

 Meso- and meta-notum much broader laterally than in the middle, 

 hindangles produced, subrotundate. Thorax longer than ab- 



