128 Mr. F. P. Pascoe on the Colydiidee 
XUTHIA. 
Caput insertum, transversum, antice rotundatum. Antenne basi tecte, 
11-articulatz, clava biarticulata, sulcis antennariis nullis. Prothorax 
subquadratus, utrinque bicostatus, lateribus anguste marginatis, crenu- 
latis. Elytra costata, parallela, convexa. Tibie trigonate, calcaratee. 
Tarsi breves. Corpus angustum, subcylindricum. 
There is very little to distinguish this genus from Bitoma, with 
which indeed it agrees in all its essential characters; but the narrower 
and more cylindrical form, stronger and more trigonate tibix, and 
shorter tarsi give it an aspect so different as, it appears to me, to 
warrant its generic separation. It is difficult to distinguish the 
species by description beyond the colour, which appears, in several 
specimens of two of the species, to be pretty constant; of the 
third species (Xuthia maura) I have only one specimen. The pro- 
thorax appears to have been clothed with fine, numerous but scat- 
tered hairs. 
Xuthia siccana, (Pl. VIII. fig. 1.) 
X. vix elongata, fusco-ferruginea ; elytris dilutioribus ; antennis pedibus- 
que rufo-ferrugineis, 
Hab. Macassar. 
Scarcely elongate, dull brownish ferruginous, much lighter on the 
elytra; head transverse, rounded anteriorly, coarsely granulate, lip very 
transverse, slightly emarginate ; mandibles bifid at the apex ; mentum 
transverse, labrum roundish anteriorly and fringed; maxillary lobes 
small, the inner very narrow ; labial palpi with the terminal joint stout, 
truncate, the maxillary palpi with the terminal joint short and obliquely 
truncate; antenne as long as the head, ferruginous, shining, the first 
two joints incrassate, the last two forming a compact, shortly ovate 
club; prothorax nearly quadrate, coarsely granulate, with two rather 
slightly elevated costs on each side, the inner very much converging 
at the base and hooked inwards anteriorly ; scutellum small, quadrate ; 
elytra with five well-marked carine (including the sutural), the inter- 
vals with a double row of deep, square punctures; body beneath dark 
ferruginous, very coarsely punctured ; legs reddish ferruginous ; tibice 
short, trigonate, calcarate ; tarsi with the three basal joints very short. 
Length 1; line. 
Xuthia rufina. 
X. modice elongata, ferruginea; antennis pedibusque concoloribus. 
Hab. Macassar. 
Closely resembles the last; but the elytra are decidedly longer 
and concolorous, and the body beneath is a little more finely 
punctured. 
