PselaphidcB mid Scydmanidcs of Japan. 127 



able by its wade and deep impression, the sides of which are 

 elevated ; and the last ventral segment of the hind body 

 is much longer than in the female. 



Abundant in refuse both in Kushiu and Nipon. 



OZ-^. — The structure of the metasternum in the male is 

 very notable, and it should be remarked that I have de- 

 scribed a very similar formation of that part in the males 

 of the Japanese species of Ctenistes. 



2. Scydmcenus ( Euconnus, Thomson) japo7ii'cus, n. sp. 

 Fulvo-testaceus, nitidus, antennis pedibusque gracilioribus; 

 prothorace hirtello ; ely tris ampliatis, setis erectis, tenuibus, 

 longioribus vestitis. Long. ^ lin. 



Allied to our S.Jimctnrius, but larger and very diffe- 

 rently coloured, the elytra broader, and their setfe more 

 conspicuous. Antenme yellow, long and slender, the four 

 apical joints long and slender, though distinctly thicker 

 than the others ; the 2nd joint longer than the 1st, 7th 

 joint slender and elongate, 8th joint slender, much longer 

 than broad ; 9th and 10th similar to one another, rather 

 stouter and shorter than 8th; 11th joint rather longer 

 than lOtli. Head much narrower than thorax, with tlic 

 eyes rather large and coarsely facetted. Thorax longer 

 than broad, narrowed to the front, impmictate but clothed 

 with fine hairs ; in front of the base, on each side, there 

 is a transverse impression. Elytra considerably widened 

 from the shoulders to a little beyond the middle, and then 

 greatly narrowed to the extremity, shining and impunctate, 

 but with very long, fine outstanding hairs ; legs long and 

 slender, the basal portions of the femora slender, their 

 apical half clavate. Mesosternum with the carina strongly 

 developed. Metasternum large, convex and impunctate. 

 Hind body immersed in the elytra. 



Common in marshes, especially at Urakami, Nagasaki. 



3. Scydmcenus dehilis, n. sp. Fusco-testaceus, antennis 

 pedibusque testaceis ; illis brevioribus, articulis tribus 

 ultimis abrupte majoribus ; prothorace hirtello, basi 

 transversim impresso; elytris setis sat elongatis, sub- 

 erectis vestitis. Long. ^ lin. 



This little Scydmcenus should, I think, be referred to 

 the subgenus Euconnus of Thomson, though its antennje 

 are much shorter than in the other species of the group. 

 The antennre are scarcely so long as the head and thorax, 

 joints 3 — 8 scarcely differing from one another, small. 



