X CONTENTS. 



Family Echinasteridae — Continued. Page. 



Genus Henricia 435 



Henricia densispina 436 



microplax 437 



arcystata 439 



Family Acanthasteridae 441 



Genus Acanthaster 441 



Acanthaster planci 441 



brevispinus 442 



Family Solasteridae 444 



Genus Solaster 444 



Solaster tropicus 444 



Genus Crossaster 447 



Crossaster scotophilus 447 



Genus Lophaster 449 



Lophaster sulueasis 449 



Genus Xenorias 451 



Xenorias polyctenius 451 



Family Myxasteiidae — — 454 



Genus Myxaster 454 



Myxaster medusa 454 



Family Pterasterldae ■ 456 



Genus Pteraster ^— 456 



Pteraster corynetes ^ --^- — — — ^ — ^-. — 456 



obesus myonotus : 458 



Genus Retaster 460 



Retaster insiguls _ ■--^ 460 



Genus Diplopteraster 462 



Diplopteraster multipes patagiatus 462 



Genus Hymenaster . — 463 



Hymenaster rhodopeplus 463 



bartBchi ^ 465 



Genus Hymenasterides -— 467 



Hymenasterides zenognathus . 468 



Family Zoroasteridae 470 



Genus Zoroaster 471 



Zoroaster ophiactis 473 



microporus 475 



carinatus philippinensis 477 



Genus Cnemidaster 480 



Cnemldaster wyvlllli 480 



Genus Pholidaster ^ 484 



Pholidaster squamatus 484 



Genus Bythiolophus 484 



Bythiolophus acanthinus 485 



Family Asteriidae 487 



Genus Distolasterias 487 



Distolasterias euplecta 487 



hypacantha 487 



Genus Tarsaster 490 



Tarsaster distichopus . 490 



