On the Development of Limulus Longispina. 



By 

 Kamakichi Kishinouye, Rigakushi, 



Science College, Imperial University. 



With Plates V— XT. 



After working out a general outline of the development of spiders,* 

 I undertook the study of the development of tlie Limuhis of this 

 country with the object of ascertaining, if possible, liow it is related to 

 the Arachnida. In order to collect materials for this investio-ation, 

 I was enabled, by Ü\e liberality of the University authorities, to visit 

 Ajino in the province of Bizen, in the summer of 1889, and again in 

 the same season of 1890. In that place, I liad exceptional opportunities 

 of collecting and ol^serving the eggs oîLinmhi^, by the kind assistance 

 of Mr. 1^). jSTozaki ;ind i\Ir. T. IsTozaki to whom my best thanks are due. 



Limulus longispina is generally known hy the name of Icahuto- 

 gani. but there are many local names such as uniiAongame, mangoyei, 

 hachigani, iinkgü. etc. In I'ronn's " Die Classen und Ordnungen des 

 Thierreichs " we find it stated that the Chinese call their Limuhis as 

 Umi-dugame ov UnJdie ; but this is ' evidently a mistake, these terms 

 l3eing a corruption of the Japanese names, umid>ugamti and uitkgü. 



* Kisliiuonye — On the Development of Areineina. This Journal, vol. IV. Part I. 



