MONOGRAPH OF JAPANESE OPHIUKOIDEA. 235 



Ophiiwa Lamaeck, 1816. 

 OpliioperJa Kœhlee, 1912. 

 Ophionohis Bell, 1902.'^ 

 Ophiofjcdfa Moetensen, 1913. 

 Ophiurolepis Matsumoto, 1915. 

 Ophiogona 8tudee, 1878. 

 Ophioplintlms Lyjiax, 1878. 

 Ophlopleura Danielssen, 1877. 

 Ophioden Lyman, 1854. 



Subfamily 2. Opliiolepidince mihi, 1915 : — Second oral tentacle 

 pores opening within the oral slits. 



I. Tentacle pores limited to a few basal arm joints. 



Ophiomusimn Ly:\L\N, 1869. 

 Ophiolipus Lyman, 1878. 



XL Tentacle pores present throughout the entire length of the 

 arm. 



Ophiophyllum Ly]vian, 1878. 

 Ophiopenia Claek, 1911. 

 Ophiocra'es Kœhlee, 1904. 

 Ophiomidas Kœhlee, 1904. 

 AmphipholizGna Claek, 1915. 

 Ophiozonella Matsumoto, 1915. 

 Ophiosonoida Claek, 1915. 

 Ophiozona Lyiian, 1865. 

 Ophiothyreus Lytvian, 1865. 

 Ophiolepis Müllee & Teosghel, 1840. 

 Opliioplocus Lyi^lan, 1861. 



1) Ophiogly})ha hexadii Smith, 1870, belong-* ^^ ßiy opinion to Ophionolufs, .is distinct from 

 the genuine Ophiur.i. 



