294 Mr. D. Sharp's revision of the 



Poeoderus, n. g. 



Closely allied to Ctenistes, but the 2nd joint of the 

 maxillary palpus is destitute of articulated appendage. 

 Differs from Enoptostomus by the great elongation trans- 

 versely of the terminal joints of the palpi, by the elon- 

 gation of the perpendicular front of the head, by the 

 elongate hind trochanters, as well as by the form and 

 stature, which are those of Ctenistes. 



The genus will include, so far as at present known, 

 only the Japanese species, P. armatus, P. medius, and 

 P. similis. 



Ctenistes armatus. 



Ctenistes armatus, Sharp, Trans. Ent. Soc. Lond., 1874, 

 p. 111. 



Mr. Lewis has found, at Yokohama, a few specimens, 

 male and female, of a Poroderus, the male of which 

 agrees pretty well with the typical male specimen of 

 P. armatus, except that the antennae are slightly shorter, 

 the 7th joint especially being less elongate, and the 

 terminal joints of the maxillary palpi scarcely so elon- 

 gate externally ; they can scarcely be more than a 

 variety. In the female joints 4 — 6 are not quite so short 

 as they are in the male, and the 7th joint also is slightly 

 longer ; but the 8th joint is quite small, and the terminal 

 three joints are each a little shorter than in the male, 

 the 9th and 10th both being each only about as long as 

 broad. These individuals indicate that the female indi- 

 cated by me as being perhaps that of C. armatus (Trans. 

 Ent. Soc. Lond., 1874, p. Ill) is more probably that of 

 a closely-allied distinct species ; Mr. Lewis has indeed 

 found at Hakone a second example of it, but at present 

 it had better not be described, a knowledge of the male 

 being indispensable. 



Ctenistes medius. 



Ctenistes medius, Sharp, I. c. 



Neither this nor the following have been yet found 

 again, so that both are still unique. 



Ctenistes similis. 

 Ctenistes similis, Sharp, op. cit., p. 112. 



