408 ART. 2. — H. MATSUMOTO. 



CONTENTS. 



PAGE 



Introductory 1. 



I. Œgox^biuroida 5. 



II. Myopliiuroida 6. 



i. Pluynophiitrida . . . . . . . . 6. 



Ophiomyxidse 7. 



Trichasteridse 27. 



GorgonocephalidEB • 58. 



ii. Lremophiurida 90. 



Ophiacanthidse 92. 



Hemieuryalidœ 138. 



iii. Gnatliophiurida 143. 



Amphilepididse 144. 



Amphinridse 149. 



Opliiotricliidœ 214. 



iv. Chilopliiurida 232. 



Ox^biolepididsß 233. 



Ophioleucidse 303. 



Opliiodermatidœ 307. 



Ophiocliitonidse 325. 



Opliiocoinida3 340. 



OpLiuran Fauna of Japan 352. 



Phylogeny of Opliinroidea 367. 



Postscript 384. 



General Explanation of Plates 384. 



Index of Genera and Species 393. 



Plates I — ^VII, with Explanations. 



Published March 31st, 1917. 



