Tun. 1 
VI. TUNICATA. 
BY 
1’rofessor W. A. Herdman, D.Sc., F.R.S. 
CONTENTS. 
Page 
Introduction 1 
I. Titles 2 
II. Biology 3 
Anatomy, Embryology, and 
Physiology ...... 3 
Geographical Distribution . 5 
III. Systematic ...... 6 
INTRODUCTION. 
Amongst the more important papers of the year are Caullery’s “ Con- 
tributions,” in which he discusses the formation of the colony, and the 
phenomena of growth, reproduction, degeneration, and rejuvenescence 
in the compound Ascidians. Seeliger’s continuation of the Tuniccita in 
Bronn’s Thierreich is always an important event, and is a worthy addition 
to a standard work. Noteworthy embryological papers have been pub- 
lished by KorOtneff (on Scilpa), and by Salensky on the compound 
Ascidians. Seeliger gives us an anatomical and distributional paper 
on the Pyrosomas , and Sluiter a systematic report on Australian 
Tunicata. 
1895. [voL. xxxti.] d 6 
