8 E. W. MacBEIDE. 



LIST OF WORKS REFERRED TO IN Prof. E. W. MacBRIDE'S REPORT 

 ON A COLLECTION OF YOUNG HOLOTHURIOIDS. 



(1) BuEY, H. The Metamorphoses of Echinoderms. Q. J. Micr. Sci. Vol. 38 (1895). 



(2) Chun. Atlantis. Biologische Studien fiber pelagische Organismen. Bibliotheca Zoologica. Heft 19 



(1896). 



(3) LuDWiG, H. Echinodermen in Bronn's Klassen und Ordnungen des Thierreichs. Bd. ii., Abt. 3, 



Buch 1. Die Seewalzen. 1889-1892. 



(4) LuDWiG, H. Zur Entwickelungsgeschicbte der Holotburien. Sitzungsber. d. Berliner Akad. d. 



Wissensch., 1891. 



(5) MacBride, B. W. The development of Echinus esculentus, together with some points in the 



development of K milaris and E. acutus. Phil. Trans, of the Royal Society. Vol. 95 (1903). 



(6) MacBeide, E. W., and Simpson, J. A. Report on the Echinoderm larv^ of the National 



Antarctic Expedition. Vol. iv. (1908). 



(7) MiTSUKURi, K. Notes on the habits and life-history of Stichopus Japonicus : Annotationes Zoologicae 



Japonenses. Vol. v., Part i. (1903). 



(8) MoETENSEN, Th. Die Echinodermenlarven der Plankton-Expedition, etc. Ergebnisse der Plankton- 



Expedition der Humboldt-Stiftung. Vol. ii. J. (1898). 



DESCRIPTION OF PLATES I. and II., 

 ILLUSTRATING Prof. E. W. MacBRIDE'S REPORT ON A COLLECTION 



OF YOUNG HOLOTHURIOIDS. 



LIST OF ABBREVIATIONS. 



(Esophagus. 



Oral pocket into which one of the 



buccal tentacles is retracted. 

 Pedal ganglion. 

 Perihsemal canal. 

 The ectodermal disc of a tube-foot 



forming in its retracted state a cup. 

 The endodermal canal of a tube-foot. 

 Polian vesicle. 



Rudiment of pulmonary trees. 

 Rectum. 



Radial water-vascular canal. 

 Stone-canal. 

 Stomach. 



