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 coxae are 
simple and distant. The mesosternum without a carina. The 
whole shape of the insect is quadratic rather than otherwise. 
20. Ptenidiuyn macrocephalum. N. 
P. ellipticum, subconvexum, nitidum, sparsim pilosum, supra 
piceo-aeneum, subtus piceum, pedibus oreque testaceis. Long. corp. 
1 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- 
phora, punctulis lineis dispositis obsoletissime impressa. Alse 
corpore plus duplo longiores. Tibiae fortiores spinulosae. Tarsi 
breviores. Prosternum 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 nar- 
rowed in front and behind, at the latter place impressed with 4 
deep not to be overlooked punctares. 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 afi'ords 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 harhatus. N. 
S. elongatus, aeneo-niger, nitidus, punctatus, sparsim pubescens, 
pedibus palpisque albidis, ore coxisque testaceis, antennis brunnes- 
centibus. Long. corp. 2| lin. 
