190 Mr. C. J. Gahan on new Longicorn CoUoptera 



XXIV. — Descriptions of a new Genus and of some new Species 

 of Longicorn Coleoptera of the Familij Lamiidse ohtaived 

 Inj Mr. C. M. Woodford in the Solomon Islands. Bj 

 Charles J. Gahan, M.A., Assistant in the Zoological 

 Department of the British Museum. 



Leueonotus, n. g. 



Head strongly concave between the antennal tubercles, the 

 latter prominent; front moderately narrow, equilateral. Eyes 

 large, lower lobes reacliing almost to the base of the man- 

 dibles. Antennae about half as long again as the body ; scape 

 eylindric, and having at its apex a narrow cicatrice, which is 

 completely limited by a distinct carina ; third joint much 

 longer than the scape, the fourth and following (the last 

 excepted) decreasing in length. 



Prothorax with an anterior and posterior transverse groove ; 

 disk uneven, and each side armed with a sharp spine. 



Elytra square at the shoulders, very much elongated, with 

 the sides parallel, tlat on the disk, gradually sloping towards 

 the sides, and then becoming vertical at the margins ; sloping 

 also behind towards the apex, which is broadly truncate, with 

 the exterior angles slightly produced, the sutural angles 

 scarcely so. 



Legs long and of equal length ; femora sublinear. 



Prosternum simple ; mesosternum with a small conical 

 tubercle in front. 



The completely margined cicatrice of the scape of its an- 

 tennae and its other characters show that this genus belongs 

 to the Monohammus-gxo\x\). From the other genera of the 

 group it is readily distinguished by its elongated form and the 

 flattened appearance of its elytra above. Potemnemus and 

 Periaptodes, which have a greater affinity with the Mono- 

 hammus- than with the i^atocera-group, in which Lacordaire 

 placed them, also have the elytra flattened ; but, with other 

 distinguishing characters, these genera are of broader form 

 and have their elytra pointed at the shoulders. 



Leuronotus spatulatus, n. sp. 



L. elongatus, parallelus, iiiger, dense pallide cinereo-pubescens ; 



elytris maculis nonnullis calvis, nitidis, seneo tiuctis ; antennis 



fusco annulatis. 

 Long. 32-40 mm., lat. 10-12 mm. 



Hub. Solomon Islands. 



