532 Entomological Papers. [No. 6. 



elongated. The head is about one third broader than the thorax j 

 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 antennae is covered with white hair. The 

 antenna? have the 3rd joint much elongated and the terminal club 

 composed of elliptic joints. 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 tibia} 

 and the tarsi, the latter very much so on the inner side. The insect 

 is of a metallic black colour highly polished ; the legs, palpi and the 

 first 2 antennal joints are whitish, the tibiae and the apex of the 

 palpi being, however, rather darker ; joints 3-11 of the antennae are 

 brownish ; the coxae and the mouth are yellowish ; the tarsi have a 

 brown spot at the apex of the first 3 joints ; the claws are black. 

 The insect is punctured all over, but less so on the abdomen, the 

 apical segments of which are indeed nearly smooth, than elsewhere., 

 and sparingly covered with small white hairs. 



22. Stenus lacertoides. N. 



S. robustus, nigro-aeneus, dense profundeque punctatus, subtus 

 sparsissime pubescens, pedibus palpisque testaceis, femoribus apice 

 nigrescentibus, antennis oreque castaneis. Long. corp. 1\ lin. 



Caput thorace quarta parte latius, fronte 2 costata. Antennae 

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

 Thorax cylindricus, medio fortius incrassatus, latitudine quarta 

 parte longior, margine anteriore elevato, basi subquadratus. Elytra 

 thorace longiora, convexa, humeris prominentibus. Abdomen im- 

 marginatum. Tarsi art. 4° profunde bilobo. 



In prov. occid. stagnorum ripis rarius occurrit. 



About this species every thing is robust. It is well distinguished 

 by the rounded club-joints of the antennae, the elevated anterior 

 margin of the thorax, the prominent shoulders, and its general short- 

 ness and plumpness. The forehead is rather more depressed or 



