19.2 Descriptions of new Ceylon Coleoptera, [no. 2, new series, 



Antennae art. 1 ° apice biacuminato, 3-4 subaequalibus, 5 prae- 

 eedente majore, 6 longitudine inter 4 et 5, ovato, 7-8 subaequalibus, 

 9 majore, 7-9 apice angustatis, tubiformibus, 10-11 ovatis, clavam 

 formantibus, vel art. 9 globoso, 9-11 clavam formantibus. Palpi 

 maxill. art. ultimo minimo apice truncato. 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 incrassated, 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 

 off, 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 th'e 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- 



