No. 9. — 1S56-8.] NEW CEYLON COLEOPTERA. 



37 



30. SCYDMN^lUS ADVOLANS. N. 



S. long. corp. f lin. Antennae art. 3 et 4, 5 et 6 inter se subaequal- 

 ibus, obovatis, 7 majore, snbgioboso, 8-10 subglobosis, basi transversim, 

 apice oblique truncatis cum 11° conico clavam formantibus. Palpi 

 maxill. art. 3° elongato, inverte conico, 4° mediocri. Mandibulae 

 tenues, medio acuminate 1-dentatae, basi abrupte dilatatse. Thorax 

 ovato- rotunda tus, apice fortius angustatus, basi leviter 2-sinuatus> 

 5-foveolatus, Elytra apice singulatim rotundata. 



The insect is of brown color, the antennae lighter, the legs 

 still more, and the tarsi and palpi quite so, the femora are 

 dark towards the apex, the head, thorax and suture are oc- 

 casionally of chestnut color. It is, as usual, pubescent. The 

 sculpture of the head in this and the following species not, 

 as in the preceding, based upon the oblong square or the oval, 

 but rather upon the form of a ball, which, in a more or less 

 compressed state, is always perceptible ; in some instances it 

 is narrowed on one side. In the present species the head is 

 heavy and subglobose. The eyes are large, prominent and 

 coarsely granulated. The antennae are inserted distant from 

 each other under two protuberances of the anterior part of the 

 forehead. The club is 4-jointed, the joints composing it 

 being flat at the base, and, with the exception of the last, 

 obliquely cut away at the apex, the last itself being conic. 

 The maxill. palpi have joint 3 rather elongated and of the 

 form of an inverted cone, joint 4 middling, acuminated. 

 The thorax is of a rounded oval shape and rather strongly 

 narrowed towards the apex, The scutellum is obsolete. The 

 elytra have the usual rudimentary costae at the shoulders and 

 are separately rounded off at the apex. The legs are middling, 

 2 posterior coxae inserted close together, trochanters all simple, 

 tibiae slightly bent at the base, narrowed and subcylindric at 

 the tip, the 4 anterior ones hairy, tarsi with joints 2-3 sub- 

 equal, the first a little longer and the 4th shorter, the two 

 anterior ones slightly contracted. 



I include in this species some individuals which slightly 

 differ from the foregoing description, being more robust, 

 covered more densely and with longer hair, especially on the 



