159 
lamina of the male rounded behind, and narrowly and angularly 
emarginate, the cerci broadly lanceolate, apex red; the sub- 
genital lamina is short, truncate, and slightly emarginate, the 
styles rather long and acute. Length of body, 20 mm. ; of pro- 
notum, 5 mm. x 9 mm. 
PLATYZOSTERIA BIFIDA, Sauss. No. 2, pars. 
The female specimen received agrees so well with Mons. H. de 
Saussure’s description of the male (Mel. Orth. II., p. 110; fig. 3) 
in all essential parts, that I have little doubt of the correctness 
of the mating, and append the supplementary description. 
Female. Blackish chestnut, lateral margin of pro-, meso-, and 
metanotum dark red, disk smooth, shining, with very few minute 
impressed dots above and beneath. Head blackish, labrum and 
border of eyes red, ocellar spots and areoles of antenne tawny ; 
antenne brown, base blackish. Pronotum with a slightly raised 
scutcheon-like figure in the disk with three rather prominent 
crenulations on each side anteriorly. Meso- and metanotum 
somewhat similar. Abdomen with hind margins of segments 
smooth, finely ciliate, angles acutely produced ; underside similar, 
middle reddish. Coxe black, external margins orange. Tarsi 
reddish to ferruginous. Supra-anal lamina subovate, emarginate, 
laterally serrate. Cerci short, apex pale. Subgenital valvules 
rather small, sutural part of apex incrassated. 
Length of body ... deli 12 . te SONA, 
Length of pronotum me: i. <2 ear 
Width of pronotum Eo2 _ Fam Ty 3) Ee 
Hab.—Narre Warren, Victoria. Nat. Mus., Melb. 
Walker’s P. tarsalis appears to be somewhat similar, but is 
described as ‘“‘sides minutely tuberculate, abdominal segments 
laterally tuberculate and segments 6 and 7 entirely so”—which 
is not the case in the above. 
PLATYZOSTERIA EXASPERA, Tepper, l|.c. 1894, p. 182. Nos. 2 
(pars), 15. 
Hab.—Near Melbourne (2), Berwick, Victoria. Locality new. 
There were a pair from one place and a male from the other, 
the female with an egg-case attached. All agree well with the 
original types, notably in the sculpture of the surface, which 
affords a good criterion in allied forms. 
*PLATYZOSTERIA COOLGARDIENSIS, sp. 7. 
Male. Resembling P. latizona, m., but larger and much 
broader in proportion. Yellow, banded with black, nearly 
smooth, moderately shining. Head testaceous, partly free. Pro- 
notum yellow, shaded reddish laterally, with some raised black, 
