259 
of prothorax, with a deep marginal stria from base almost to 
more crowded on parts of prosternum. Front tibiae with a 
subtriangular tooth near base, separated by a semicircular 
notch from a larger and more obtuse one at apex; apex with 
three processes: an acute and rather short spine at inner 
apex, an obtuse somewhat curved one close to and almost the 
length of tarsi, and a subacute and somewhat shorter one 
between it and the short one. Length, 1'9 mm. 
4b5.— Western Australia: Swan River, from a nest of 
i nm dark species of Zctatomma (J. S. Clark). Type, 
. One of the most interesting of the many interesting 
mquilines recently taken by Mr. Clark. 
THORICTOSOMA TIBIALE, n. Sp. 
FL xxv, Bg. 43, 
Castaneous-brown. Glabrous. 
Head much as in preceding species. Prothorar about 
once and one-half as wide as long, almost semicircularly 
emarginate in front for reception of head, with a distinct 
stria from base to apex on each side; punctures small, sharply 
defined, and almost uniform throughout. Elytra about twice 
the median length of prothorax, and almost its exact width at 
Se; with a narrow deep stria on each side from base to apex, 
-2'25 mm. 
Hab.— Western Australia: Geraldton (A. M. Lea). 
additional process at apex. Of the processes on the front 
tibiae one is short and acute, one is about the length of the 
three basal joints of tarsi, one is slightly longer, and the other 
ìs longer than the four basal joints combined, somewhat 
rurved and rather blunt. Two specimens, one of which is now 
i^ » were taken in 1896, probably from a nest of ants. 
