358 



ART. 2. — H. MATSUMOTO : 



Opliiura imbecülis : 

 Ophiomusium simplex : 

 Ophiomusium lunare : 

 Ophiomusium lütkeni : 

 Ophiomusium laqueatum : 

 Ophiozonella projecta : 

 Ophiolepis cincta : 



Ophiolepis annulosa : 

 Ophioplocus imhricatus : 

 Ophiurodon grandisquama : 

 Ophiarachna incrassata : 

 Ophiaraclmella gorgonia : 

 Opkiarachnella infenialis : 

 Ophionereis porrecta : 

 Ophiocoma brevipes : 

 Ophiocoma scolopendrina : 

 Ophiomastix mixta : 

 Ophiomastix lütkeni : 

 Ophiomastix annulosa : 

 Ophiarthrum elegans : 



in Japan not 



Sagami Sea. 

 Eastern Sea. 

 Eastern Sea. 

 Eastern Sea. 

 Eastern Sea. 

 Sagami Sea. 

 precise locality 



known. 

 Okinawa, Riu-Kiu. 

 Okinawa, Riu-Kiu. 

 Sagaroi Sea. 



Okinawa, Eiu-Kiu ; Benin Is. 

 Misaki districts. 

 Eno-ura, Suruga Gulf. 

 Korea Strait. 

 Natsui, Hiuga. 

 Kagoshima Gulf. 

 Misaki districts. 

 Okinawa, Riu-Kiu. 

 Pinnacle Is., Riu-Kiu. 

 Okinawa, Riu-Kiu. 



50 species : 21%'. 

 VII. Honshu- American species, which occur on both the western 

 and eastern coasts of the North Pacific. The following 

 species belong here. 



Amphioplus rhadinohrachius. 

 Amphioplus hexacanthus. 

 Amphioplus macraspis. 

 Amphipholis pugetana. 

 Amphiura carchara. 



