238 BRITISH BEETLES. 



There remain the following five genera, found in this 

 country, which have no connection with each other, and 

 cannot be located with certainty in any of the foregoing 

 families. 



Phlceophilus, usually considered as allied to Myce- 

 tophagus and Triphyllus, and placed by some authors 

 among the Dasytidte. The single species known, P, 

 Edwardsi, was for a long time only found in this country, 

 where it is taken in Leicestershire, Lincolnshire, and 

 Dorset, living in the old lichen-covered boughs of oak- 

 trees. It is an oblong, convex, slightly pubescent, 

 strongly punctured insect ; with a dark thorax and grey 

 elytra, more or less variegated with darker lines ; and, 

 unlike the Mycetophagidce, is very sluggish. The three- 

 jointed club to its antennae (of which the two basal joints 

 are thickened), the incrassated apical joint of its maxil- 

 lary palpi, and its five-jointed tarsi, which are entire, ap- 

 pear to separate this insect from those with which it is 

 usually associated. 



Diphyllus, placed usually among the Mycetophagida, 

 differs from the members of that family in its tarsi, 

 which have five joints, the fourth being extremely small, 

 and in the club of its antennae, which is composed oi 

 two joints. Our single species, lunatus, found in fungi 

 on bark in Norfolk, Somersetshire, etc., is very small 

 and dull black, with striated elytra, bearing a whil 

 crescent -shaped spot in the middle. 



Myrmecoxenus (placed by Thomson between Lyct 

 and Ptinus in his division of Xylophagi) has four-joint* 

 tarsi ; the three first segments of the abdomen connal 

 (the first not being longer than the second) ; the club of 

 the antennae almost four-jointed ; the pygidium exposed, 

 and the head not extended from the thorax. 



