184 Mr. G. Lewis on 



Hypolithiis expansicornis^ sp. n. 



H. saxatili simillimus, sed antennis articulis latioribus et pedibus 



flavis. 

 L. 7 mill. 



This species has the basal joint of the antenna expanded 

 like that of H. saxatih's, but the other joints are broader and 

 much less constricted at their bases. Tlie thorax is relatively 

 longer, sides more parallel, hind angles straight, and the 

 antennse and legs pale yellow. 



Hab. Juusai. One example found under a stone by the 

 lake. 



Hi/polithus Jluviatilis, sp. n. 



Subdepressus, niger, griseo-pubescens ; capita punctato ; thorace 



angulis baud acute productis ; pedibus infuscatis. 

 L. 7 mill. 



Kather depressed, black, with griseous pubescence ; the 

 head, frontal carina less conspicuous than that of H. saxatilis, 

 punctures not closely set in the middle nor very differently 

 near the eyes ; the thorax densely and rugosely punctate, 

 with a median smooth line, hind angles slightly turning 

 outwards, not acute ; the elytra striate, interstices rather 

 convex, punctulate and a little rugose ; the antennce, first 

 joint robust but not expanded like those of the last two 

 species, reddish brown, articulations constricted at base ; the 

 legs infuscate. 



Resembles closely H. hyperhoreusy Gryll. 



Huh. Kashiwagi. One example. 



Cryptohypnus rivaliSj sp. n. 



Brunneus, nitidus ; capite tboraceque supra jrneo-nigris ; clytris 



brunneis, striatis ; autennis brunneis ; pedibus testaceis. 

 L. 4| miU. 



Brown, shining; head and thorax (above only) blackish, 

 with an aeneous tint ; the head uneven, rather irregularly 

 punctured; the thorax convex, punctures fine and sparse on 

 the disk, larger and more dense behind the anterior angle, 

 posterior angles somewhat robust, reddish brown ; the elytra 

 striate, stri;e near the outer margin punctate, interstices with 

 a few very fine punctures ; the anteniuv brown, dusky at the 

 apices of the articulations ; the legs testaceous. 



Very much like C. rivularius, Gyll. ; hind angles of the 

 thorax more robust ; elytra relatively shorter, antennas 



