458 Mr. C. 0. Waterliouse on Indian Coleoptera. 



crowded at tlie sides; with a short well-marked impressed 

 line on each side of the base; the posteriar angles nearly 

 right angles. Elytra smoother than the thorax, finely and 

 thickly punctured ; each with four narrow raised lines, with 

 a very oblique oblong yellow patch near the middle. 



Eab. Travancore. B.M. 



This species is very distinct from all the described species 

 of the genus, and it should be placed at the end. The fine 

 carina on the vertex of the head is a peculiarity I have not 

 met with in any other species. 



Prionidae. 



LoG^US, n. g. 



General characters of Priotyrannus. ^. Antennas as in 

 that genus, but with the third joint stouter, less parallel, im- 

 pressed above, and (as well as the fourth, fifth, and sixth 

 joints) more shining on the upperside. Mandibles short, 

 thick ; the left one with a single strong triangular tooth near 

 the apex ; the right mandible triangularly dilated at the base. 

 Eyes moderately approximate above. Labial palpi very 

 short, the apical joint very large and irregularly ovate. The 

 maxillary ])alpi moderately long and stout, the apical joint 

 oblong. Thorax transverse ; the anterior angle produced 

 laterally into a strong acute spine, its anterior border in a 

 straight line with the anterior margin of the thorax ; in the 

 middle the side is triangularly enlarged and furnished with 

 a strong acute spine, with a second small spine immediately 

 above it ; behind the middle the side is strongly emarginate, 

 the posterior angle slightly dentiform. Elytra moderately 

 long, subparallel, a little narrowed towards the apex, the 

 sutural angle with a small tooth. Legs as in Priotyrannus^ 

 but altogether stouter. Prosternal process parallel, obtuse at 

 the apex, not narrowed at the apex as in Priotyrannus. Meta- 

 sternum clothed with dense pile. 



Logceus siibo^acus, n. sp. 



Niger, subopacus ; thorace confertim subtiliter punctato, plagis 

 duabus (ad basin conjunctis) nitidis fortiter punctatis; elytris 

 picescentibus, ad basin laxe subtiliter punctulatis; abdomine pedi- 

 busque piceis. 



liOngi 26 lin. 



Head very closely and rugosely pUncttlred. Thorax gently 

 convex on the disk, very slightly impressed in front and on 

 each side within the posterior angles ; on each side of the disk 



