HORN EXPEDITION—ORTHOPTERA. 
361 
pale, witli piceous to black lateral border and a small round pale spot within the 
dark on each segment except the last; disk reddish. Supra-anal lamina pale, 
transverse ; hind margin rounded, slightly emarginate. Cerci short, broad, pale. 
Subgenital lamina large, rotundate, entire; margin rugulose. 
Length of body (female) - - - - 24 mm. 
,, pronotum - - - - - 5 ,, 
Width .,.11 „ 
Locality. —Finke Gorge, Palm Creek, Reedy Hole. 
Epilamppa aspera, Tepp. (Trans. Roy. Soc. S.A., xvii., p. 62). 
Locality. —Oodnadatta. A single specimen of a female larva. 
PeRIPLANETIDA5. 
Polyzosteria imppessa, sp. n. Metallic blackish glaucous; fore and 
hind margin of pronotum and the hind margins of all other segments narrowly 
yellow. Face, antennte, legs (except the ochreous coxse) and ventral segments of 
abdomen brownish-red. Vertex of the head dull metallic green, punctate; fore 
margin of clypeus whitish. Pronotum hooded, lateral margin broad, reflexed, 
impressed cribriform rugulose, hind angles moderately rounded; discal area 
limited by a semicircular interrupted impression, in front a low elevation succeeded 
by an inversely-curved depression, and on each side of the middle an elongated 
pit ; hind margin concave. Meso- and metanotum with similar sculpture and 
transverse impressions ; hind angles of former distinctly produced, hind margin 
straight; of latter, hind angles not produced, hind margin very sinuous. Abdomen 
short, very slightly rugulose, margin of last two segments tinely crenulate and 
hind angles produced ; lirst ventral segment and coxre bordered pale. Supra-anal 
lamina very flat and short, rotundate, entire, rugulose. Cerci very short, 
acuminate, pale yellow. One adult (?) female. 
Length of body ----- 28 mm. 
,, pronotum - - - - - 8 ,, 
Width „ - - - - - 18 „ 
Locality .—Illamurta, James Range. 
This remarkable species is distinguished from all others by the peculiar 
sculpture of the thoracic segments, the curves of the segmental hind margins, and 
the general colouring. In form it resembles P. limbata., but is otherwise quite 
difterent. 
