266 
HORN EXPEDITION—COLEOPTERA. 
The elytra of tliis species are much like those of T. euclensis^ Blackb., the 
granules of the 5th and 9th series (/>., the 2nd and 4th of those containing the 
larger granules) running together into costie as in that species at the base, but the 
smaller granules run in more regular longitudinal series, and the larger ones are 
considerably more elongate; the prothorax, however, is very different, its costae 
being (not hne nitid lines, but) coarse, ill-detined, opaque convexities, and its hind 
angles being entirely rounded off; the front tibiae (disregarding the apical 
dilatation) have only a single small tooth, which is placed on the middle of the 
external margin. 
Alice Springs. 
T. 7ne}ititor,&\>. nov. (1). Prsecedenti affinis, sed prothoracis costibus gracilibus 
subnitidis (costa 2^ pone medium late interrupta, parte interrupta tuberculo 
nitido instructa), lateiabus vix 3-sinuatis, angulis posticis acute rectis; tibiarum 
anticarum dente externo mediano vix distiucto; cetera ut priecedentis. Long. 7 1. 
Lat. 4 1. 
This species may be roughly described as having the prothorax of T. euckfisis 
with the elytra of T. ifisignicollis, but differing from both in its front tibite having 
(the apical dilatation being disregarded) no distinct tooth. 
Palm Creek. 
N.B.—The collection contains a third specimen of T?-ox (from Storm Creek), 
which, though with much hesitation, I regard as conspecific with T. jnejititor. It 
differs in the front of its clypeus being considerably less acute and in the median 
tooth of its front tibia? being quite distinct. I must admit that these differences 
are of a kind that I do not find usual within the limits of a species; at the same 
time, as I can find absolutely no other differences, it does not seem desirable to 
give a new name on the authority of a single specimen. The two species described 
above differ from nearly all their known Austi’alian congeners in the sculpture of 
their elytra, inasmuch as the series of larger prominences ought scarcely to be 
called tubercles, but seem to be formed merely by fine carime being lu’oken into 
short pieces separated from each other by spaces shorter than the pieces, except 
near the apex, where the pieces become granuliform. T. cnndidus, Har. (at least a 
type of it which I have received from the collection of M. Thomson), has somewhat 
similar sculpture, but it differs from these two Central Australian species uiter 
alia in the presence of squarish nitid spaces scattered over the elytra and in the 
absence of regular close-set series of small granules between the series of elongate 
quasi-tubereles, 
