68 MADEIRAN COLEOPTERA, 
punctatis, antennis pedibusque pallidioribus longioribus valde 
robustis. 
Long. corp. lin, 11. 
M. dark-piceous, and slightly shining (at any rate on the elytra). 
Head and prothorax very deeply and roughly punctured: the 
former with the eyes situated at some little distance before the 
extreme base,—the basal rim itself being broader and more regu- 
larly rounded (and therefore less angular) than in the following 
species: the latter narrowed anteriorly, but slightly rounded at 
the sides,—the broadest part being a little behind the middle ; 
with the edges crenulated, and the anterior angles produced into 
a very large, blunt and outwardly-direeted spiniform tooth ; with 
a broad shallow fovea on either side behind, and occasionally with 
a channel on the fore-disk which vanishes about the middle. 
Elytra more piceous, or diluted in colouring, than the rest of the 
surface,—especially about the shoulders, where it is at times rufo- 
ferruginous ; deeply and rugosely seriate-punctate, and with longi- 
tudinal rows of short, decumbent rigid sete, or pubescence. Limhs 
longer and more robust than in the next species; and clear rufo- 
ferruginous,—the antenne however, especially towards their apex, 
being obscurer. 
A single specimen of the present Monotoma (on the distinctive 
characters of which I have received some interesting observations 
from Mr. Janson) was detected by myself in the Ribiero de Sao Jorge 
(in the north of Madeira proper) during the summer of 1855; and a 
second one has been lately communicated to me by Mr. Mason, 
186. Monotoma congener, n. sp. 
M. picea subopaca, oculis fere ad basin capitis sitis, capite protho- 
raceque rugose punctatis, hoc ad latera subrecto, angulis anticis in 
spinam productis, elytris (preesertim ad humeros) fuscescentioribus, 
seriatim punctatis, antennis pedibusque pallidioribus robustis, 
Long. corp, lin, 1-1}. 
M. smaller and more opake than the preceding species, and generally 
of a slightly browner, or more diluted, hue. Head and prothorawx 
less deeply sculptured: the former with the eyes rather more pro- 
minent, and nearer to the base, than in that insect, and with the 
hinder rim itself consequently narrower and less rounded,—the 
head being more suddenly truncated (much as in the common Eu- 
ropean M, picipes): the latter with the sides much straighter than 
in the preceding insect, and with the anterior angles produced into 
a less-developed, and a not quite so outwardly-directed, spine ; and 
with the basal fovez and lateral! crenulations not quite so distinct. 
Elytra usually altogether browner, and more diluted in colouring, 
than the last species ; also less deeply sculptured, with the pubes- 
cence somewhat finer, and with their sides a trifle more parallel. 
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