Xll CONTENTS. 



PAGB 



Melations of the Platyhclminthes Part 3 340 



Entozoa confounded with TrichincB „ 342 



Life- History of the Liver Fluke ,, 342 



Excretory Apparatus of Turhellaria „ 344 



New Parasites „ 345 



Tube of Stephanoceros Eichornii „ 345 



Chemical Composition of Tubes of Onuphis Part 4 509 



Nematoid Ilcematozoon from a Camel ,, 509 



Developments of Marine Planaria ,, 509 



Eyes of Planarians „ 510 



Development of the Orthonectida „ 511 



Eyes of Rotifers „ 512 



Development of Annelids Part 5 618 



Development of the Central Nervous System of Annelids . . „ 619 



Coral-reef Annelid ,, 621 



Muscidar Tissue of the Leech „ 621 



Observations on the Dicyemidce „ 621 



Orthonectida „ 624 



New Rotifer (^Cupelopagis bucinedax) „ 625 



Synthetic Annelid Part 6 778 



Elytra of Aphroditacean Annelids „ 779 



Phosphorescent Organs of Tomopteris „ 780 



Priapulus bicaudatus „ 780 



Anatomy of Ankylostoma duodenale „ 781 



Structure of Trematodes „ 782 



Adaptation to Environment in the Tretnatoda „ 784 



Vascular Organs of Trematoda „ 784 



Anatomy of Cestodes „ 785 



Studies on Cestodes „ 786 



Ligula and Schistocephalus „ 786 



New Floscularia „ 787 



Desiccation of Rotifers „ 787 



Echinodermata. 



Development of the Skeleton of the Ophiurida Part 1 55 



Asterias „ 56 



Spines of Asteroidea , , 57 



Nervous System of the Ophiuroidea Part 2 199 



American Comatulce „ 199 



Note on the Spicules found in the Ambulacral Tubes of the 



regular Echinoidea. (Plate V.) Part 3 297 



Structure of Pedicellarice „ 346 



Circulating Apparatus of Starfishes „ 347 



Genital Passages of Asterias „ 348 



Histology of Temnopleuridce ,, 448 



Anatomy of Holothurians Part 4 512 



Hybridization of Echinoidea 513 



Variation in Asterias glacialis „ 513 



Anatomy of Echinoids Part 5 626 



Anatomy of Spatangus purpureus „ 627 



Development of Asterina gibbosa „ 628 



