14 



JOURNAL R. A. S. (CEYLON.) [Vol. III. 



In ripis lacus Colombensis sub veget. putrescent, mens. Jul. non 

 infrequenter legi. Agilis est et avolare semper expeditus. 



A pretty and very interesting little insect, about whose 

 systematic position I am not quite satisfied; however, I pro- 

 visionally place it towards the end of the true Lebiidce, I 

 find it most to agree with the descriptions of the g. Penta- 

 gonica 8. G. and Bhombodera R ., with neither of which, 

 however, it is identical. The head is distinguished by the 

 large and prominent eyes, and four deep impressions, two larger 

 ones at the root of the antennae, two smaller ones between the 

 eyes, also by a very distinct neck which connects it with the 

 thorax ; the labrum is large, transverse and entire, with the 

 angles rounded ofH and the base narrowed ; the mentum is but 

 slightly transversely emarginated, edentate ; the ligula is trun- 

 cated at the tip, the paraglossae adhere to it, reach a little be- 

 yond it. and are obtuse at the apes ; the palpi are rather long 

 with the last joint elliptic, acuminate ; the antennas are strong, 

 filiform, and reach beyond the shoulders, joints 5-10 are of 

 equal length and cylindric, 4-11 are pilose. The most re- 

 markable part of the insect is, however, the thorax, which is 

 of a subrhomboidal shape, transverse, smaller than the head, 

 as broad again as long; it has two strong lateral angles at the 

 middle, each furnished with a strong bristle, the anterior 

 part has the sides rounded, the posterior abruptly obliquely 

 contracted, at the base it is cylindric. As a specific distinc- 

 tion of the thorax, I mention, moreover, that in the present 

 species it is impressed with two deep punctures before the mid- 

 dle and that it is rugose at the case. The abdomen is slightly 

 peduncled. The scutellum is slightly excavated. The elytra 

 are oval, rather convex and impressed with rows of punctures. 

 The legs are simple and weak, apparently equal in both 

 sexes. The anterior tarsi are little stouter than the rest, 

 but not dilated nor furnished with any additional clothing 

 below ; the anterior tibiae are deeply notched. As to the 

 colour: the head and wing covers are black, the latter with 

 the suture and margin of a light brown and highly polished, 

 the thorax is reddish, and the legs are whitish. The insect 



