Pselaphidce of Japan. 329 



obscurely impressed, and the larger of the ventral seg- 

 ments with two very fine short ridges, causing it to 

 appear foveolate on the middle between them. 



Pselaphus leivisii, n. s. 



Angustulus, rufo-testaceus, nitidus, palpis testaceis, 

 articulo ultimo longius clavato, parcissime setulosus ; 

 elytris stria suturali aliaque discoidali obsoletis. Long. 

 If mm. 



This species is not very dissimilar from the well-known 

 European P. heisei, except that it is very much narrower, 

 and is entirely destitute of the two peculiar pseud-ocelli 

 seen between the eyes of P. heisei ; the antennae and 

 palpi are similar to those of P. heisei, the club of the 

 last joint of the latter being more than half the length 

 of the joint. The thorax is very shining, and without 

 fovea. The elytra and hind body are very similar to 

 those of P. heisei, except that the sutural and discoidal 

 striae are less distinct. 



A single example, probably a female, was found at 

 Nagasaki on the 28th May, 1881. 



DlAKTIGEK, n. g. 



In this genus of Clavigerini the insect possesses eyes, 

 and has the antennae 4-jointed ; the 1st joint is very 

 short, globose, and is only imperfectly separated from 

 the very short 2nd joint, which is a little narrower and a 

 little shorter than the globose basal joint, and projects 

 just a little out of the cavity of the head ; the 3rd joint 

 is slender and elongate, evidently thicker, however, 

 towards the extremity, and is quite three times as long 

 as the breadth at the extremity ; it is deeply divided from 

 the 4th joint, which is rather elongate, becomes gradually 

 broader towards the extremity, which is abruptly trun- 

 cate ; it is longer than the 3rd joint. This is a similar 

 disposition of the antennae to what would exist in 

 Fustiger fuchsii, if the terminal joint of that insect were 

 deeply divided into two near its middle. 



From Clavig erodes, Kaff., which is stated by Keitter to 

 possess 4-jointed antennae, Diartiger is distinguished by 

 the fact that it has only two exserted antennal joints ; 

 from an inspection of a specimen of Clavigerodes 

 abyssinicus I entertain, however, little doubt that, if we 



