256 
DIPHOBIA LONGICORNIS, n. sp. 
Pl. xxv; fig. 40 
Castaneous, head and prothorax somewhat darker than 
other parts. Upper-surface with sparse and short, semierect 
setae 
Head with small dense punctures; with a shallow median 
line. Antennae long and thin, first joint rather stout, second 
with its base curved under apex of first, third distinctly longer 
than fourth, fifth-tenth moniliform, eleventh cylindrical, 
about as long as three preceding combined. Prothorar 
distinctly longer than wide, with a deep post-median transverse 
impression, marked at its middle by a deep fovea and towards 
each side by a smaller one; densely strigose. Llytra ovate, 
strongly convex, base truncate, not much wider than pro- 
thorax, and with six small deep foveae; with rows of small 
punctures, the interstices also punctate. Metasternum 
shining, and with fairly large, asperate punctures. Abdomew 
with small punctures in middle of two basal segments, 
becoming larger and asperate at sides, and on the whole of 
the third segment. Legs long and thin. Length, 
Hab.—Western Australia: Swan River, five specimens 
from nests of the twig-mound ant, Iridomyrmex sp. (J. 8. 
"Clark). Type, I. 10653. : 
Readily distinguished from all other species of the genus 
by the long terminal joint of the antennae. The sterna and 
abdomen are glabrous. The femora are grooved throughout 
bee length, on the under-surface, for the reception of the 
ibiae. 
ECTREPHES FORMICARUM, Pasc.- 
XXv., figs. 4l and 42. 
Mr. Clark has taken this species, about the ni Kes : 
in abundance from nests of Iridomyrmex conifera, and 
kreusleri ) says "sub lente setosus.” The clothing seems to 
particularly liable to abrasion as most of the specimens before 
specimen there were numerous fairly long hairs on the Pro” 
` rax and elytra, but on floating it off for examination most 
of 1e hairs were ;; on three specimens there are still a 
hairs left on the upper-surface. The antennae look very 
t from different points of view. : 
