76 



parts and palpi brown varied with yellowish ; antennae pale 

 yellow, basal joints dark l^rown. Pronotum highly arched in 

 front, foremargin bi-sinuate, narrowly pale yellow, disk rough 

 with several low oblique ridges, hindmargin slightly convex, 

 bordered very narrowly jDale yellow, more or less invaded or in- 

 terrupted by raised, shiningly black stria3, as in all the succeeding 

 segments ; lateral margin much incrassated, very narrowly black. 

 Meso- and meta-notum with a prominent oblique ridge midway 

 between margin and middle on each side ; median line nearly 

 obsolete. Pectoral segments beneath pale yellow, with numerous 

 dark dots and sinuous lines, margin narrowly pale yellow, and 

 a wider submargina] brown stripe. Coxae brown, bordered and 

 varied with pale-yellow. Femora brown* in front and laterally, 

 remainder yellow. Tibiae wholly brown, spines pale, with dark 

 tips. Ventral segments of abdomen with pale margins, and 

 broad metallic-green submarginal band ; disk of the first four 

 yellow, with one or tw^o brown transverse lines, last two or three 

 wholly dark-brown or black, except the hindmargin. Supra-anal 

 lamina of male subquadrate, scarcely emarginate, narrowly 

 bordered with yellow, and covered with short hair. Subgenital 

 lamina of male black, bordered yellow; styles (also cerci) wholly 

 yellow. 



Male. 

 Length of body ... 30-34 mm. 

 Length of pronotum 10-11 " 

 Width of pronotum 20-24 " 

 Width of abdomen... 20-22 " 



Habitat. — Aliout the Head of the Great Australian Bight 

 (female, B. Tate); Fraser Range, S. Western Australia (Elder 

 Exjjloriny Expedition). S.A. Museum. 



The species appears to be unique on account of the body being 

 covered dorsally by a fine dense pubescence only absent along 

 portions of the median regions and the summit of the larger 

 rugosities ; in the larval stages it is much less developed than in 

 the adult, or quite absent. The larvae are also distinguished by 

 the greater distinctness of the black streaks across the pale 

 border of the hindmargins, and the underside being much 

 darker. 



PoLYZOSTERiA PATULA, \Valke7' (Brit. Mus. Cat., 157). 

 Broadly elliptical, dull metallic-green ; lateral margin of 

 thoracic segments very broad, dull-yellowish ; hindmargins of all 

 segments more or less interrupted, dull-yellowdsh. Dorsal surface 

 finely and irregularly wrinkled, with some larger, rather-deeply 

 impressed excavations on the thoracic segments, the broad margin 

 of these being deeply and distantly punctured. Head of body- 



