44 Mr. G. Lewis 



on 



basal joint of the antenna ; the thorax veiy closely punctured, 

 punctures circular and mostly finely ocellate, especially 

 behind the neck, channel before the scutellum very feeble, 

 the posterior angles and carina rather long ; the scutellum 

 subacuminate ; the elytra punctate-striate, interstices mark- 

 edly rugose ; the antennae — second and third joints equal and 

 rather long, two basal joints sometimes piceous ; the tarsi 

 brownish, legs infuscate. 



This insect in colour is somewhat like M, tnsidi'osus, but it 

 is longer, more parallel, punctuation coarser, and hind angles 

 of the thorax straighter. 



Hab. Ichibosayama and Oguma, in May. A small series. 



Megapenihes insidtosus, sp. n. 



Aterrimus, opacus, griseo-pubescens ; thorace confertissime puiic- 

 tato ; anteniiis nigris, articulo 1° rufo : pedibus obscure brunneis. 

 L. 8| mill. 



Densely black, opaque, with griseous pubescence; the head 

 very closely punctured, carina well-marked, anteriorly straight; 

 the thorax punctured like the head, narrowest anteriorly, and 

 gradually widening to the posterior angles, hind angles 

 carinate and slightly turning outwards ; the scutellum sub- 

 acuminate behind ; the elytra finely punctate-striate, inter- 

 stices rugose and visibly broader than in M. liigomus ; the 

 antennge rather short and serrate, third joint scarcely as long 

 as the second, black, basal joint reddish ; the legs brownish, 

 thighs dusky. 



Less densely black than j\l. higonius and much less elon- 

 gate and less parallel ; antennae shorter, articulations more 

 compressed, serration more distinct. 



Hab. Chiuzenji and Niohozan. Ten specimens, some 

 taken from a tree-trunk imbedded in snow as late as June. 



Megapenthes fugisanus, sp. n. 



^ueo-niger, siibopacus, vix piibescens ; capitc parum dense punc- 

 tato, in medio leviter impresso ; thorace confertissime oeellato- 

 punctato ; antennis nigris ; pedibus piceis. 



L. 7 mill. 



Bronzy black, scarcely pubescent; the head rather thickly, 

 rather coarsely punctured, with a median impression between 

 the eyes, frontal carina obsolete ; the thorax very clearly 

 and very closely punctured, punctures not very large but dis- 

 tinctly ocellate, on cither side behind the middle there is a 

 feeble circular impression, sides narrowed anteriorly, gradually. 



