208 CLAVICORXIA. [Dendropliilus. 



visible if viewed sideways ; anterior tibia; finely and irregularly denti- 

 culate. L. 2-3 mm. 



Iu the nests of Formica rvfa ; local ; Esber, Forest Hill, Plumstead, Hampstcad, 

 Oioinbe Wood, Hainault Forest; Norfolk; Suffolk ; Bristol; Bewdley Forest; Budd-m 

 Wood, Leicester ; Hopwas Wood, Taimvorth ; Scotland, very local, Tay and Dee 

 districts. 



XVIYRItlETES, Marseul. 



This genus contains one European species, which for a long time was 

 associated with Saprinus ; it is, however, quite distinct from that genus 

 by reason of its narrow tibia?, of which the anterior pair are very finely 

 and indistinctly spinulose, and by the comparatively dull and impunc- 

 tate upper surface, and also by the fact that the anterior tibiae are not 

 provided with grooves for the reception of the tarsi. 



BT. piceus, Payk. Round, convex, pitchy-brown or ferruginous, 

 smooth, comparatively dull ; forehead without stria ; thorax short, some- 

 times lighter at sides ; elytra with fine strise, abbreviated behind, the 

 subhumeral stria alone being almost entire ; tibia? not dilated. L. 2-2f 

 mm. 



In nests of Formica rvfa ; local ; Plumstead ; Esher ; Parkhurst Forest, Isle of 

 Wight; Norwich ; Bristol ; Buddon Wood ; Bewdley Forest ; Tamworth ; York; Scar- 

 borough ; Scotland, very local, Dee district. 



GNATHONCTJS, Duval. 



This genus contains about a dozen species from Egypt, North America, 

 Tasmania, &c. ; three of these are found in Europe, of which two occur 

 in Britain ; there is, however, considerable confusion as to our species ; 

 Mr. G. Lewis, who has lately done so much good work on the Histeridse, 

 and to whom I am indebted for other information regarding the 

 group, writes to me that he has never seen a British example of G. 

 rotundatus ; all our specimens must therefore be referred to G. nanne- 

 tensis ; the second species, G. punctulatus, is by some authors considered 

 merely a variety, but it appears to be distinct ; the genus is very closely 

 allied to Bapritttu, under which, indeed, it has been included by many 

 writers ; it differs in having the frontal stria wanting, and in the fact 

 that there is a considerable interval between the last two teeth of the 

 anterior tibias ; the sutural stria is distinct in front and abbreviated 

 behind, and the epipleurae are furnished with three stria? instead of two 

 as in Saprinus, 



I. Size larger ; form more strongly convex and rounded ; 

 dorsal striae of eljtra reaching beyond middle, the first 

 almost reaching apex ; upper surface more strongly and 



thickly punctured G. NANKETENSiS, Mars. 



II. Size smaller; form less convex and rounded, with 

 more parallel sides ; dorsal stria; of elytra ceasing at 

 middle, with the exception of the first which almost 

 reaches apex; upper surface more finely and diffusely 

 punctured > . . G. ruNCTULATUS, Thorns. 



