Phcderia.'] HETEROMEBA. 11 



somewhat oblique line, their separation being ill-defined; antennas short, 3- 

 jointed ; body consisting of twelve segments, of which the prothorax is the largest, 

 being about as long as the meso- and ruetathorax together ; first eight abdominal 

 segments much resembling one another; anal segment somewhat spoon-shaped, 

 rounded at apes, with almost the whole upper surface occupied by a broad, some- 

 what rugose, shallow excavation, the apical margin ot which is furnished with fonr 

 small, but stout and distinct, dark tubercles ; beneath the anal segment there is a 

 plate furnished with two comparatively long fleshy prominences which serve as 

 prolegs; legs short, but plainly visible from above, fossorial, terminated by a single 

 claw. I am indebted for the opportunity of describing this larva to Mr. G. C. Big- 

 nell, who kindly sent me a colony of the perfect insect with two of the larvse. 



P. cadaverina, F. Oval, convex, testaceous, "with a more or less 

 distinct black spot on each elytron, which is very variable, sometimes 

 occupying the greater part of the surface, and sometimes entirely absent ; 

 between these tAvo extremes endless varieties occur ; occasionally the 

 spots are confluent at the suture ; head subtriangular, distinctly punc- 

 tured, antennae short, thickened towards apex ; thorax broader than 

 long, with the sides subparallel behind, and gradually rounded and nar- 

 rowed in front, very finely punctured, the punctuation being somewhat 

 diffuse on disc, scutellum transverse ; elytra with distinct striae, inter- 

 stices finely but plainly punctured ; legs stout, anterior tibiae dilated. 

 L. 6-7 mm. 



Sandy places on the coast ; occurring beneath sea-weed and at roots of grass, 

 Sedum,&c.; locally common ; Southend ; Harwich; Walton-on-Xaze ; Clacton-on- 

 Sea ; Hunstanton ; Margate; Hastings; Dover; Hayling Island; Portsmouth; 

 Isle of Wight ; Bournemouth ; \Yeymouth ; Whitsand Bay, Plymouth ; Dawlish ; 

 Barnstaple ; Buruliaro, Somerset; Swansea; Barmouth ; Lytham, Lancashire 

 (Power). 



BOLITOPHAGINA. 



This tribe may be distinguished from all the other tribes belonging 

 to the family by the short first joint of the posterior tarsi, as well as by 

 the sulcate genae ; the antenna; are inserted in our genera beneath 

 a strong frontal plate and are thickened towards apex, the inter- 

 mediate joints being laterally produced ; the tibiae are linear, or slightly 

 widened at apex, with the spurs small or obsolete ; the tarsi are covered 

 beneath with thin and short pubescence, and their last joint is longer 

 than the preceding ones taken together ; both the European genera are 

 found in Britain. 



I. Eyes completely divided; sides of thorax strongly 



crenulate BOLITOPHAGUS, III. 



II. Eyes not completely divided; sides of thorax not, or 

 scarcely, crenulate HELSDO>'A, Latr. 



BOLITOPHAGUS, Illiger. 



This genus contains about twenty species, of which three are found 

 in Europe and the remainder are very widely distributed, representa- 



