259 
of the Group Cerambycinse. 
spine. The elytra are finely and closely punctured, the 
punctures on the basal part running together to form a fine 
rugosity. In P. pedestris the elytra, as well as the body, are 
black, with a very delicate greyish pubescence ; the legs and 
antennse are rufous ; the elytra are very closely punctulate up 
to the apex. P. hurneralis is wholly reddish ferruginous, 
with the exception of the shoulders of the elytra, which are 
fuscous ; it is clothed with a very delicate grey pubescence ; 
the elytra are closely punctulate as far as the apex. P. con - 
socius is of a somewhat dull ferruginous colour, with the 
lateral borders of the elytra somewhat fuscous ; the punctu- 
lation of the elytra towards the apex is sparser and more 
minute than in the two preceding, and the apex of the elytra 
is more distinctly quadrispinose. These differences are 
perhaps little more than varietal. There are indeed in the 
British Museum collection two specimens from Southern 
India which seem to be intermediate in characters between 
the North-Indian hurneralis and the Ceylonese consocius. 
Plocederus obesus. 
Plocederus obesus , Galian, Ann. & Mag. Nat. Hist. ser. 6, vol. v. p. 51. 
Since describing this species I find that one completely 
resembling it had a short time before been figured in the 
1 Indian Museum Notes ’ (vol. i. no. 2, pi. v. fig. 4 a and b) 
as the Plocederus pedestris of White. The latter species it 
cannot possibly be, and I am only in doubt whether the 
species figured is my obesus or the ferrugineus of Linnseus. 
Judging from the figure and the localities given I should 
say it is the former. The insect is stated to be injurious to 
timber-trees, and at page 91 of the 6 Notes’ some account of 
the habits of the larva is given. For the advantage of ento- 
mologists in India, and so that a correct determination of the 
species in question may be possible, I will supplement my 
short description of Plocederus obesus , and point out how it 
differs from P. pedestris . 
Length 27-45 millim., or from about 1-lf inch ; width 
9-15 millim. 
Clothed with a short but rather dense fulvous-grey pubes- 
cence almost concealing the derm beneath it ; the latter where 
rubbed is seen to be of a reddish chestnut or testaceous colour. 
The antennse in the male are much longer than the body, ferru- 
ginous, with the intermediate joints usually tipped with black 
at the apex, with the scape finely rugose-punctate, with the 
remaining joints up to the tenth very minutely granulate, and 
with the fifth to tenth joints denticulately produced at their 
