19.2 Descriptions of new Ceylon Coleoptera, [no. % new series. 
Antennae art. 1 apice biacuminato, 3-4 subasqualibus, 5 prae- 
cedente majore, 6 longitudine inter 4 et 5, ovato, 7-8 subsequalibua, 
9 majore, 7-9 apice angustatiSy tubi/ormihus, 10-11 ovatis, clavam 
formantibus, t"eJ art. 9 globoso, 9-11 clavam formantibus. Palpi 
maxill. art. ultimo minimo apice truncate. Mandibulae dente bifido 
munitae basi fortiter abrupteque dilatatae. Thorax foveis basali- 
bus nullis. Pedes elongati tarsis art 2-3 subaequalibus, 
I include in this species individuals with a two and others with 
a three-jointed antennal club The latter are further distinguish- 
ed by having a slight sinuosity in the rounded outline of the basal 
angles of the thorax, by having the posterior part of the metathorax 
and the base of the abdomen sensibly in'irassated, and the head 
rather less quadrate than the former. However, the individuals 
thus distinguished being in all other respects exactly like those 
with the two-jointed club, I cannot help looking upon all these dis- 
tinctions as sexual ones and uniting the insects in the same species. 
The head from the eyes to the neck is of a transverse subquad- 
rated form merging into oval by the angles being rounded 
oflf, the anterior part is narrowed. And this is the typical sculp- 
ture of the scull in all the five species of this group. The eyes in 
the present species are middling. The antennae are rather approx- 
imated at the base and inserted in the centre of the front under a 
ridge which runs across it from eye to eye. The first joint is bia- 
cuminated at the apex, the 5th is longer than the adjoining ones, 
joints 7-9 in the individuals with the two-jointed and 7-8 in those 
with the three-jointed club are of a peculiar construction being nar- 
rowed at the apex and fitting into each other like the tubes of a 
spyglass. The club joints are ovate, flat at the base, the last is 
large and obtusely acuminated. I consider the principal distin- 
guishing character to lie in the remarkable structure of joints 7-9 
of the antennae. The maxill. palpi have joint 2 rather strongly 
incrassated at the apex, joint 3 obovate, narrowed at the base, joint 
4 very minute, truncated at the apex. The mandibles are furnish- 
ed with a bifid tooth and are strongly and abruptly dilated at the 
base. The thorax is of an obovate or obcordato — ovate form being 
rather strongly rounded off before the middle and gradually nar- 
rowed below it ; the usual basal impressions are wanting, the pos- 
