1868.) 277 
Ctenostoma EBENINUM. — Long. 5| liu. ; Lit. clytr. Irl-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 laarrowed behind, and without constriction at the neck ; near each 
eye are two longitudinal impi^essed lines, with a narrow raised line 
between them : the labrum. palpi, mandibles, and four basal joints of 
the antennne are black, the remaining antenual 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 C. succincfum, 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 corcultjm.— Long. 2|- lin. ; lat. elytr. | lin. ^J, 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) pygmcBum (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. pygmceum, the 
