18 



JOURNAL R. A. S. (CEYLON). [Vol. II J „ 



with the tibiae thickest at the tip ; the third tarsal joint is of th© 

 length of the preceding two ; the latter are somewhat bilobed 

 and hairy below. The posterior coxse are simple and distant, 

 The mesosternum without a carina. The whole shape of th© 

 insect is quadratic rather than otherwise. 



14. Ptenidium, macrocefhalum. 'N. 



P. ellipticum, subconvexum, nitidnm, sparsim pilosum, supra piceo 

 seiieum, subtus piceum pebibus oreque testaceis. Long. corp. \ lin. 



Caput maximum Antennarum clava elongata articulis* ellipticis, 

 Thorax subquadratus antice posticeque angustatus, basipunctis 4 magnis 

 profunde impressus. Elytra ovata, medium versus leviter inflata, apice 

 obtuse acuminata, abdomine longiora et ampliora, punctulis lineis dispo- 

 sitis obsoletissimis irnpressa. Ala? corpore plus duplo longiores. Tibiae 

 fortiores spinulosae. Tarsi breviores. Presternum carinatum. 



In praecedentium societate frequenter lectum. 



This is perhaps the prettiest of the five species of the family 

 just described, and at first sight recognised by the shape of its 

 body and the polished back. The head is very large. The 

 thorax is narrowed in front and behind, at the latter place 

 impressed with four deep not to be overlooked punctures. Th© 

 wing-covers are oval, a little inflated about the middle, rounded 

 at the apex, and longer and wider than the abdomen. Th© 

 prosternum is carinated. 



It affords me much gratification to be enabled to publish 

 representatives of three genera of this highly interesting and 

 probably very extensive and widely-distributed family of 

 pygmies, the South Asiatic representatives of which have 

 hitherto been entirely unknown. I have no doubt that even 

 this Island is the abode of a great many more species. 



15. Stenus barbatus. N. 



S. elongatus, aeneo-niger, nitidus, punctatus, sparsim pubescens, pedibus 

 palpisque albidis, ore coxisque testaceis, antennis brunnescentibus. 

 Long. corp. 2£ lin. 



Caput thorace tertia parte latius, fronte costis 3 abbreviatis, antice 

 albido-pubescens. Antennae art. 3° sequentium 2 fere longitudine, 3 

 ultimis elongatis, ellipticis. Palpi max. elongati apice densius pubes- 

 centes. Thorax cylindricus medeo leviter incrassatus, basi s-ubquadratus. 



