296 ME. G. LEWIS OlS- JAPAN 



here indubitaWj belong. The fact that each genus is repre- 

 sented by only one species is significant, and tends to show that 

 although a few members of the family are sufficiently plastic to 

 accommodate themselves to the climate and the other local 

 surrouudings between lat. 31° and 34°, yet there is nevertheless 

 some physical check, which reduces their vital capital, and puts 

 an end to that production of surplus power which would arise 

 in a more southern climate, and, arising, would lead to further 

 specific differentiation. There is no geographical line or barrier 

 sufficient to exclude trojoical forms from Japan ; but their 

 environment, when they reach it, prevents them from establish- 

 ing themselves to any great extent ; and in the southern island 

 this is, as we should conceive, first felt in the effects of winter, 

 rather than in those of summer, for it is to the colder period of 

 the year we can at first trace the chief deterrent influences. 



I am indebted to Mons. Gr. Power for his kinduess to me in 

 indicating the position of one or more of the genera ; and the 

 notes I have inserted in the text, showing the near allies of the 

 species, are extracted from one of his letters. 



1. Zemioses celtis, n. sp. (Plate XII. figs. 1, 7, 8.) 



JNitidus, robustus, rufo-ferrugineus, conspicue miuus sparsim 

 iiirtellus ; elytris profunde striatis, striis fere esculpturatis ; 

 rostro brevissimo. 



Hobust, shining concolorous, clothed with long yellow-grey 

 hairs ; thorax with scattered irregular shallow punctures and a 

 median furrow wide on the disk. The elytral strige are broad, 

 flat on the surface, and lightly impressed with punctures ; the 

 humeral angle is smooth. In some examples the apex of each 

 antennal joint is piceous. Length with rostrum S-3^ lines. 



I have compared this species with Mr. Pascoe's porcatus, but 

 it is not specifically allied to it. Sehasms Deyrollei, Lacord., is a 

 Zemioses, M. Power taking Sebasius for those species in which 

 the thighs go beyond the abdomen, as in cancellatus. 



I took this species on a large Geltis growing on the banks of 

 the Kumagawa, at Hitoyoshi. Specimens were passing in and 

 out of the small holes made by Ftinus or Flaiypus, in a barkless 

 portion of the tree, after the manner of the Histeridae, Tryponodus 

 and Teretrius, when searching for larvae of wood-borers. When 

 in the holes it was not possible to get at them, for though seen 

 in the orifices, they retired when disturbed 6 or 8 inches into 



