BY WILLIAM MACLEAY, J UN., ESQ. 151 



the rest of their surface in tliree irregular rows. The first of 

 these rows consists of a few small depressions or fovefB, the 

 second of larger and more numerous ones, and the third of large 

 irregularly shaped depressions which extend to the lateral mar- 

 gins. The fore tibiae are tridentate, but a very minute fourth 

 tooth may be found on close examination. The tooth on the 

 intermediate tibice is blunt and arcuated. 



The mandibles are blunt at the apex, and the last joint of the 

 palpi is securiform. 



3. — Gnathoxys barbatus. 



Niger subnitidus, capite antice bisulcato, thorace elongate 

 medio obsolete canaliculato margine basali subplano, elytris 

 antice lisvibus postice granulatis in medio parce puuctato- 

 foveolatis, tibiis anticis extus tridentatis. 



Long. 6 lin., lat. 2| lin. 



Hab South Australia, in Mr. Waterhouse's collection. 



This species is of a rather dull black. The head is less 

 drooping, and more like that of a Carenum than in any of the 

 species before mentioned. The facial grooves are long as in 

 Carenum, and there is a number of long setjB about the mouth. 

 The thorax is long, and without the raised basal margin of the 

 three preceding species ; and it has the medial line very indis- 

 tinct, except near the anterior margin, where it is deep, and near 

 the base, where there is a punctured depression. The elytra are 

 smooth near the base, and granulated at the apex, while the 

 intervening portion is thinly marked with variously sized clusters 

 of punctures, cisposed in four irregular rows. The first of these 

 rows, or that nearest the suture, contains only three or four small 

 depressions towards the hinder part of the elytra ; the second 

 row is composed of a greater number of small depressions, each 

 containing about five punctures, the third row is composed of five 

 larger depressions, each full of punctures, and the fourth con- 

 sists of very irregular and still larger depressions also closely 

 punctured. The fore tibite are tridentate. The tooth on the 

 intermediate tibise is blunt and under the lens appears dentated 

 beneath. 



