TABLE OF CONTENTS. XIII 



Page. 

 Attachment of laiv;i and its transformation into stalkeil form— Continued. 



Intestinal canal **6^ 



Coelome and Its derivatives (axial and chambered organs) 470 



Hydrocoele ^^'^ 



Parietal canal '*'^ 



Mesenchyme. 



47 



Calcareous skeleton '^^ 



Sacculi- 



480 



481 



Connective tissue 



Stalked larva after rupture of vestibule, up to appearance of rudiments of arms 482 



Description of larva from fifth day to sixth week after rupture of egg membrane 482 



,^-__- 482 



' „.„_ 482 



Ectoderm 



Ectoderm of body wall ^ 



Vestibular lining and nervous system 483 



Ectoderm of the tentacles '*^^ 



Intestinal canal "^''^ 



Coelome and its derivatives ^"^ 



Chambered organ ■*^- 



4Q"J 



Axial organ 



Hydrocoele '*'*^ 



4Qt; 



Parietal canal 



497 

 Mesenchyme 



Sacculi ^^'^ 



Dorsal nervous system 



499 

 502 



Antedon mediterranea 



Antedon bifida 



Antedon moroccana ''"" 



Comactluia meridionalis ^^^ 



Tropiometra macrodiscus 



Tropiometra picta •^■^" 



Isometra vivipara 



Notocrinus virilis 



Abnormal embryos and larvfe ^ 



The pentacrinoid young 



Comissla littoralis 



Comissia hartme.veri 



Oomanthus wahlbergii 



tlomactiuia meridionalis _ _ 



Comasterid pentaerinoids "' ' 



VLamprometra, sp ^ 



Tropiometra picta ^~ 



Ptilometra miilleri 1.'" 



Crotalometra porrecta 'j" 



Olyptometra tuberosa "" 



Antedon petasus ~ 



Antedon bifida "- ^'^ 



Autedou moroccana '^~ 



Antedon mediterranea '~ 



Antedon adriatica j.^- 



Compsometra serrata ^^^ 



Compsometia loveni ^^ 



Leptometra celtiea —^^' "" '^^ 



I.eptometra phahinginin 



