qnd Species of Longicorn Coleoptera. 245 



ciliated, about as long as the body, the first joint large, the third 

 and fourth equal, the rest gradually diminishing ; prothorax 

 uneven, with a spine at the side ; elytra somewhat depressed, 

 wider than the thorax ; legs moderate, the middle and posterior 

 tibiae strongly toothed. 



The strongly toothed middle and posterior tibiae distinguish 

 this genus from Exocentrus, which appears to be its nearest ally. 



Phhjarus basalis. (PI. XXV. fig. 5.) 



P. fuscus parce pilosus ; elytris striatis, basi rubris ; antennis 

 pedibusque piceis. Borneo. 



Dark brown, sparingly hairy above, head and prothorax paler; 

 elytra coarsely striated, particularly at the base, which is of a 

 brick-red colour, passing into the brown of the remainder ; 

 antennae and legs pitchy. 



Length 2\ lines. 



Monohammus gravidus, 



M. fusco-piceus, griseo-pubescens; prothorace parvo, transverse, 

 lateribus fortiter spinosis ; elytris amplis albo-irroratis, sin- 

 gulis plaga magna media albidd. Borneo. 



Pitchy brown, with a greyish white pubescence ; prothorax 

 small, transverse, with a very strong spine on each side, and a few 

 black granulations posteriorly ; elytra large, convex, apiculate, 

 with two slightly raised lines, and sparingly covered with short 

 hairs, the shining surface of the elytron beneath giving them a 

 somewhat silvery lustre, here and there the hairs more densely 

 placed, having the appearance of spots, a very large one below 

 the middle of the elytron being very marked ; under surface with 

 a greyish metallic pubescence ; antennae scarcely longer than the 

 body ; eyes brown ; tips of the mandibles and palpi pitchy ; 

 epistoma and labrum with rusty red hairs. 



Length 21 lines. 



Rather different in habit from other Monohammi, but evidently 

 allied to Hammaticherus marmoratus, Westw. 



Monohammus vicinus. 



M. olivaceo-aureus, sericeo-undulatus ; prothorace tenuiter 

 spinoso, medio longitudinaliter impresso. China Borealis. 



This is closely allied to M. permutans, but is smaller and nar- 

 rower, with tlie lateral spine less produced, and arising from a 



