370 
HORN EXPEDITION — ORTHOPTERA. 
Lengtli of body 
,, pronotum 
„ elytra - 
Width of pronotum 
? 
33 mm. 
- 
35—47 
mm 
8 „ 
- 
10—12 
55 
27 „ 
- 
13—18 
55 
- 
7— 9 
)5 
Female dai’ker, much larger tlian the male; elytra and wings abbreviate. 
Head and fastigium similar, antenme broadly ensiform. Pronotum tubercular 
rugose, laterally tumid; carina scarcely perceptible, hind margin subrotundate, 
emarginate, lateral pale band more distinct, darker stripe much less distinct than of 
male. Elytra broad, extending to the middle of fourth abdominal segment, radial 
and ulnar areas much spotted, remainder almost concolorous. Wings short, though 
perfect, pale brownish, pellucid. Coxre and hind femora e.xternally whitish, trans. 
verse lines dark, inner side black at base, as long as abdomen. Metanotum with 
fore margin white, on each side a kidney-shaped, sharply-defined, bluish-white spot 
close to medial line; abdomen with first three segments similarly marked, sides 
banded black below spots, middle of dorsum, etc., concolorous. Twelve specimens 
of both sexes. 
Locality .—Oodnadatta (two pairs). Storm Creek (one pair), Stevenson River 
(one pair), Illamurta, Storm Creek (each one female), Alberga Creek (two males), 
Alice Springs (one young larva). 
The above species may probably require a genus for its reception, on account 
of the disparity in size and the organs of flight in the two sexes, which are not 
mentioned in the original description of the genus, otherwise they appear to agi'ee 
well with it. 
Mesambria^. 
TritPOpis vittatus, sp. n. Size moderate. Greyish-tawny, sides of body 
and the elytra and hind femora mottled with blackish. Pronotum tricarinate, 
ridges slightly elevated, interrupted, black, disk laterally with a broad band on 
each side, extending in front to the lateral margins of the fastigium, behind along 
the anal margin of the elytiva \ medial space dark brown. Elytra with anterior 
margin greyish-tawny, discal area a little darker. Hind femora internally pale 
tawny. Two females. 
Length of body ----- 25—27 mm. 
,, elytra . - - - - - 25 ,, 
,, pronotum - - - - - 7 ,, 
Width „ ----- 4 „ 
