l(}2 



M. OGAWA. 



This is the first specimen of the species recorded from the Loochoo 

 Islands. 



26. Urophlexis ussuriana (Seeb.). 



(Shiwosazai). 



Yakushima : A single male obtained Oct. 23, at Miyanoura in the 

 island. 



This species is rather rare in Japan. 



27. Cetlia canlans (T. & s ). 



(UgLlisu). 



Tanegashima : 22 and 12 .£ specimens collected in Nov. 

 Yakushima: 31 <£ and 15 £ specimens, during Nov. and Dec. 

 Amami-Öshima : 1 2 , Dec. 11. 

 Okinawashima : 1 April 14, at Naha. 



In view of the question if C. cantans and C. cant Mans are really distinct 

 species, — a question which many observers in Japan, Mr. Ovvston and 

 myself included, are strongly inclined to answer in the negative not only on 

 account of the meager evidence on which the distinction rests but also on 

 the strength of observations in field and on a large material of specimens, 

 — special care was taken by the collector in sexing the examples of Ccttia. 

 Now, the specimens from Tanegashima and Yakushima, eighty in all, can 

 easily be separated into two distinct groups according to the size of 

 individuals. All the larger individuals, fifty-three in number, are found to 

 be males, while every one of the smaller individuals, numbering twenty- 

 seven in all, is of the female sex. The measurements in averages taken 

 from the two groups are as follows : 



I. Average lengths taken from Oilmen. Wing. Tarsometatarsus. 



53 specimens, all <^s 11 mm. ... 64.5 mm. ... 23 mm. 



