the Staphylinidte of Japan. 283 



Homceusa acuminata. 



Eurynsa acuminata, Markel, Stett. ent. Zeit. 1842, p, 143. 



Mijanoslnta, May 1880 j one example, agreeing exactly 

 with European specimens. 



Homceusa laevigata^ n. sp. 



Nigra, subnitida ; antennis, pedibus anoque rufo-sordidis ; subtilis- 



sime punctulata ; thorace fere loevigato. 

 Long. 3| millim. 



Antennaa rather short, much thicker externally, fifth to tenth 

 joints transverse, terminal joint elongate, nearly as long as 

 the preceding three together. Thorax strongly transverse, 

 considerably broader than the elytra, bisinuate on each side 

 at the base ; hind angles acute, sharply defined, the surface 

 sparingly and excessively finely punctate, somewhat shining. 

 Elytra about as long as the thorax, very finely punctate. 

 Hind body acuminate behind, very finely punctate. 



Seba, July 30th, 1881 ; one specimen in an ant's nest. 



Homceusa longicorms, n. sp. 



Picea, baud nitida, thoracis lateribus anoque testaceis ; elytris brun- 

 neis ; antennis pedibusque rufis ; subtiliter punctata ; antenuia 

 sat elongatis, articulo penultimo vix transverse. 



Long. 3| millim. 



This insect is considerably larger than H. japonica and has 

 quite different antenuge, these organs being more slender and 

 elongate than they are in H. jaijonica or the other known 

 species of the genus. The thorax is strongly transverse, a 

 little rounded at the sides, bisinuate behind, the hind angles 

 slightly acute J the surface finely punctate and pubescent. 

 Elytra about as long as the thorax, rather closely and finely 

 punctate. Legs rather long. 



Sapporo J one specimen. 



ASPIDOBACTEUS, nov. gen. 



Tarsi anteriores 5-articulati. Antennse breves, crassse, fusiformes, 

 rigidae. Pronotum magnum, anterius semicirculare, posterius 

 bisinuatum. Coxoe intermedise contiguse. 



Of this peculiar insect Mr. Lewis obtained only one ex- 

 ample, and although I can see its characters only very im- 



