1913.] 101 



to this the accessory lobe iu P. fi,metarms is dilated aud almost trun- 

 cate at the apex, somewhat as in G. trossuliis, where as in P. sordidus 

 and P. cephalotes it is narrowed into a point at the apex as iu the 

 genus Quedius. 



We took four specimens of this very distinct species in moss at 

 the top of Creag Dhu (2581 feet), Kingussie, Inverness-shire, on 

 September 18th, 1911. 



April, 1913. 



DESCEIPTION OF A NEW SPECIES OP ACTOBIUS. 

 BY D. SHARP, M.A., F.R.S. 



ACTOBIUS YTENENSIS, Sp. 71. 



Niger, antcnnis x>6dibusquc pireis, illis articulis pcnultimis hrevibus, tratis- 

 versis, articulo ultimo testaceo, tarsis tibiartimqiie basi et apice sordidc jiavis ; 

 capita thoraceque pernitidis, sat fortiter multipunctatis ; elytris sat nitidis, sw6- 

 tilius dense punctatis, ahdomijie densissivie punctato. Long. corp. 5 mm. 



This is a very distinct little insect, allied to A. signaticornis but 

 rather broader, and in shape more like a small A. cinerascens. The 

 peculiar colour of the antennae, which are pitchy-black with the terminal 

 joint yellow, distinguishes it at once ; the form of the antennae is also 

 different, they being shorter and a good deal thickened towards the 

 apex, with the penultimate joints strongly transverse. 



The anterior tarsi are much dilated in the male, the 4th joint 

 being quite broad ; and in this sex there is a broad shallow emar- 

 gination of the hind-margin of the last entire segment of the 

 abdomen. The aedeagus is highly interesting ; it is nearest to that 

 of Gahriuf^, with some points of approximation to PhUonthus, and it 

 seems to prove that the single long rod of the latter genus really 

 corresponds with the two coalesced lateral lobes. 



I first met with the species on May 5th, 1909, when I captured 

 a female in moss beyond Beaulieu Road Station. Yesterday, while 

 working for Tachys 'parvulvs in quite another pai-t of the New Forest, 

 my daughter and I found three specimens. Ytene is said by Wise 

 to be the Saxon name of the New Forest district. 



Brockenhiu'st : 



April 16th, 1913. 



