18GS.) 277 



Ctenostoma ebeninum. — Long. 5i Hn. ; lat. elytr. li lin. ^ . Cylin- 

 drical, deep black, shining; elytra rather thickly covered throughout 

 with distinct punctures, and marked in the middle of each with a 

 narrow, oblique, slightly waved, white fascia, which reaches neither 

 the suture nor the lateral margin : apex of the elytra broadly 

 edged with testaceous-white. 



The species belongs to the section Procephalus, having cylindrical 

 elytra, not tumid behind, and distinct shoulders. The upper-surface is 

 destitute of hairs. The head is narrow, glossy, and impunctate, gradu- 

 ally narrowed behind, and without constriction at the neck ; near each 

 eye are two longitudinal impressed lines, with a narrow raised line 

 between them : the labrum, palpi, mandibles, and four basal joints of 

 the antennae are black, the remaining antennal joints brown. The 

 thorax is narrow, equally and moderately constricted before and 

 behind, with the intermediate part oval ; the anterior part is not wider 

 than the posterior ; it is glabrous and impunctate. The elytra are 

 tolerably evenly and moderately punctured, from the base to the apex : 

 the central white line is placed obliquely from the suture backwards, 

 and is impunctate ; the apical spot is punctured ; the apex of each 

 elytron is emarginate-truncate, with the sutural angle obtuse, and the 

 external prominent and acute. The under-surface is glossy-black, and 

 clothed with black bristles. 



One example, Ega. The only described species which resembles 

 this in colours and markings is G. succinctum, of Castlenau (Eev. Ent. 

 Silberm. 2, p. 36) ; but the white mark of the elytra in this is described 

 as lying before the middle, transversal, and arcuated. 



Ctenostoma COKCULTJM. — Long. 2f Hu. ; lat. elytr. | Hn. ^. Cylin- 

 drical, pitchy-black, shining ; elytra with distinct shoulders, evenly 

 convex, not dilated behind, clothed with a few long black bristles, 

 punctured throughout, the punctures much coarser towards the 

 base, a narrow straight transverse fascia before the middle, the 

 apex and sutural region near the apex tawny-white, legs rusty- 

 testaceous, basal half of femora and the trochanters nearly white : 

 sides of the crown behind the eyes greatly dilated and obliquely 

 elevated. 



Not closely related to any known species. It resembles in some fea- 

 tures C. {Myrmecilla) pygmceimi (Lacordaire), but is easily distinguished 

 by its square shoulders ; the dilated sides of the crown behind the eyes 

 give the head the same angular appearance in both, but the structure of 

 this part is essentially different in the two species. In G. pygmcBum, the 



