356 



ART. 2. — H. MATSUMOTO 



Eastern Sea. 



off Boshû. 



off Kinkwasan, Rilmzen. 



Bering Sea. 



Uraga Channel. 



British Columbia. 



Uraga Channel. 



off Kii, Knmano Sea. 



Ampkiophmra convexa : 

 Amphiophiura sculptilis^h 

 Opliiura flag ell ata^^: 

 Ophiura irrorata}^: 

 Ophiomusium scalar ^^: 

 Ophiomiisimn lymam^\- 

 Ophiomusium cancellatum : 

 Ophiernus adspersus^^: 

 13 species : QX. 



V. Inch-Pacific American species, which range from Malaysian 

 waters to the western coast of southern North America 

 or Central America, through Japanese waters. The 

 species belonging here and their known northern limits 

 are as follows. 



Species. Northern limit. 



Amphiura koreœ : off Echizen, Sea of Japan ; Sa- 



gami Sea (on the Pacific side). 

 Ophiochiton fastigatus : Uraga Channel. 



2 species : 1%. 



VI. Indo-Pacific species, which range from the Indian Ocean 

 or Malaysian waters to Japan. The species to be referred 

 here and their known northern limits are as foUws. 



Species. Northern limit. 



Ophiomyxa aiistralis : Sagami Sea. 



Astroceras pergamena : Uraga Channel. 



Trichaster palmiferas : Colnett Strait. 



Trichaster elegans : Tanabé Bay, Kii. 



Euryale aspera : Okinawa, Riu-Kiu. 



1) These species have been recorded also from East Indian waters. 



