1902.] NATURAL SCIENCES OF PHILADELPHIA. 633 



Japan. Dr. H. C. Wood (4). 



Yokohama, Japan. Rev. H. Loomis (30), Rehn Collection. 



Kioto, Japan. Y. Hirase (54), Nos. 10 and 23. 



Chemulpo, Korea. Dr. W. H. Jones (2). 



With the extensive series examined ample opportunity was pre- 

 sented for studying the range of variation exhibited by this species. 

 Several of the types would be regarded as distinct, if it were not 

 that the extremes and intermediates occurred in the same locality, 

 The variations have been studied under two heads — structure and 

 coloration. 



Sti'ucture. 



The most peculiar and the most unusual structural form of this 

 species is that in which the cephalic portion of the dorsal aspect of 

 the pronotum is strongly inflated or bullate. Four specimens in 

 the series illustrate this singular phase, between which and the 

 normal condition no intermediates were examined. Kioto and 

 Yokohama were the localities represented in the four specimens. 



The other gi-eat structural difference is in the median carina of 

 the pronotum. In the majority of cases it is straight or very 

 slightly arcuate, with a slight incision at the transverse sulcus ; in 

 some cases it is much more arcuate on the prozona than in the 

 metazona; in a few (7) it is highly arched, not notched by the 

 transverse sulcus. The specimens belonging in the latter category 

 are all from Yokohama. 



Examples of this species are found both subbrachypterous and 

 macropterous. 



Coloration. 



The two general types of coloration, the brown and green, as 

 pointed out by Saussure, are present in the series, many representa- 

 tives of each, and a great number of intermediates showing what a 

 wide range this broadly diffused species has in the color scheme. 



The extreme green phase has the base color of the head, prono- 

 tum and dorsal aspects of the closed tegmina and caudal femora, 

 as well as portions of the pleurse rich grass green, the lateral por- 

 tions of the tegmina basally of a chocolate tint marbled with 

 cream, the overlying lint being grouped into transverse bai-s 

 anteriorly. 



The extreme brown phase is of a general dull umber tint, the 



