jan.— -mar. 1857.] Descriptions of new Ceylon Coleoptera. 179 



typical form by being fringed with short simple cilia instead of 

 those long feathery appendages, they are moreover without a dis- 

 tinct peduncle but still folded in the manner characteristic of the 

 family. The legs are stout with the tibiae thickest at the tip, the 

 3rd tarsal joint is of the 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 the insect is quadratic rather than otherwise. 



20. Ptenidium macro cephalum. N. 



P. ellipticum, subconvexum, nitidum, sparsim pilosum, supra 

 piceo-seneum, subtus piceum, pedibus oreque testaceis. Long. corp. 

 |lin. 



Caput maximum. Antennarum clava elongata articulis ellipti- 

 cis. Thorax subquadratus antice posticeque angustatus, basi punc- 

 tis 4 magnis profunde impressus. Elytra ovata, medium versus 

 leviter inflata, apice obtuse acuminata, abdomine longiora et am- 

 pliora, punctulis lineis dispositis obsoletissime imp ressa. Alse 

 corpore plus duplo longiores. Tibiae fortiores spinulosse. Tarsi 

 breviores. Presternum carinatum. 



In prsecedentium 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 nar- 

 rowed in front and behind, at the latter place impressed with 4 

 deep not to be overlooked punctures. The wing-covers are oval, a 

 little inflated about the middle, rounded at the apex and longer 

 and wider than the abdomen. The prosternum is carinated. 



It affords me much gratification to be enabled to publish repre- 

 sentatives of three genera of this highly interesting and probably 

 very extensive and widely distributed family of pigmies, the 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. 



21. Stenus barbatus. N. 



S. elongatus, seneo-niger, nitidus, punctatus, sparsim pubescens, 

 pedibus palpisque albidis, ore coxisque testaceis, antennis brunnes* 

 centibus. Long. corp. 2 j lin. 



