No. 9. — 1856-8.] NEW CEYLON COLEOPTERA. 



19 



Elytra thorace paulo longiora, sed fere duplo latiora, convexa, ovata. 

 Abdomen immarginatum. Pedes elongati tenues, tibiis apice tarsisque 

 fortiter setosis, his art. 4° profunde bilobo. 



In lacus Colomb. ripis specimina nonulla legi. 



This as well as the following species belongs to Erichson's 

 division II. B. of the g., both having the abdomen immarginate 

 and the fourth tarsal joint bilobed. Everything about this 

 species is elongated. The head is about one-third broader 

 than the thorax, the forehead is slightly excavated with two 

 elevated ridges running from the root of the antennae a short 

 distance upwards, a third runs from the crown of the head 

 down towards the centre of the two former, but all three reach 

 only about the middle of the head. The part below the 

 antennas is covered with white hair. The antennae have the 

 third joint much elongated and the terminal club composed of 

 elliptic jointa. The thorax is rather slender, incrassated at 

 the middle, gradually narrowed in front but nearly quadratic 

 behind. The elytra are longer than the thorax, about double 

 its breadth and oval, being slightly narrowed at the shoulders 

 and the apex. The legs are long and slender, hairy at the 

 apex of the tibiae and the tarsi, the latter very much so on the 

 inner side. The- insect is of a metallic black color, highly 

 polished; the legs, palpi and the first two antennal joints are 

 whitish, the tibiae and the apex of the palpi being, however 

 rather darker, joints 3-1 1 of the antennas are brownish, the 

 coxae and the mouth are yellowish, the tarsi have a brown 

 spot at the apex of the first three joints, the claws are black. The 

 insect is punctured all over, but the abdomen, the apical seg- 

 ments of which are indeed nearly smooth, less so than the rest 

 of the body, and sparingly covered with small white hairs. 



16. Stenus lacertoides. N. 



S. robustuSj nigro-seneus, dense profundeque punctatus, subtus spars- 

 issime pubescens, pedibus palpisque testaceis femoribus apice nigre- 

 scentibus, anfcennis oreque castaneis. Long corp 1^ lin. 



Caput thorace quarta parte latius, fronte 2„costata. Antennas robustse 

 art. 3° quarto paulo longiore, 9-10 globosis, 11° conico.. Thorax cylin- 

 dricus, medio fortius morassatus, latitudine quarta parte longior, margin,® 



