Pselaphidce of Japan. 323 



to 8th slightly, 9th and 10th strongly transverse ; ter- 

 minal joint disproportionately large, with acuminate ex- 

 tremity. Head depressed between the antennal tubercles, 

 and curvedly depressed between the eyes ; the vertex 

 convex, simple. Thorax longer than broad, nearly 

 straight at the sides, with excessively fine but distinct 

 raised line extending from the base for nearly half the 

 length, and so passing through the large transverse 

 depression. The elytra are longer than the thorax, 

 both the sutural and discoidal striae are deep, at their 

 origin excessively deep ; the latter does not extend half 

 the length of the wing-case. 



The unique example exhibits no sexual marks. 



Found among dead leaves at Suwa Temple, April 8th, 

 1881. 



Bryaxis. 



Bryaxis princeps, Sharp. 



Sharp, Trans. Ent. Soc. Lond., 1874, p. 119. 



Mr. Lewis has found a series of this species near 

 Nagasaki in March and April, showing that my opinion 

 as to the sexes was correct ; the male is constantly 

 considerably larger than the female, and apparently 

 much rarer. 



Bryaxis alienus, Sharp. 



Sharp, Trans. Ent. Soc. Lond., 1874, p. 120. 



Two additional male individuals were found at Naga- 

 saki in February and March. 



Bryaxis cubitus, Sharp. 



Sharp, Trans. Ent. Soc. Lond., 1874, p. 122. 



A single male specimen was found, probably at Naga- 

 saki, so that I am not able to throw any light on the 

 difficult question as to the characters distinguishing the 

 females of this and the allied species. 



Bryaxis mundus, Sharp. 



Sharp, op. cit., p. 122. 



Mr. Lewis has not brought back any other specimens 

 that are certainly this species, but a few female indi- 

 viduals found about Nagasaki without any male appa- 

 rently pertain to it. In my notice of the male characters 



