Tun . 1 
VI. TUNICATA. 
BY 
Professor W. A. Herdman, D.Sc., F.R.S. 
CONTENTS. 
4 
Page 
Introduction.1 
I. Titles.2 
II. Subject-Index.3 
a. Anatomy.3 
B. Physiology .4 
c. Embryology.5 
D. Geographical Distribution 5 
III. Systematic.6 
INTRODUCTION. 
We have again this year an important text-book account of the group, of 
an advanced and detailed nature, from E. Perrier. Lohmann gives us a 
useful account of the structure and functions of the cuticular formation 
known as the “House” in Appendicularians; and we owe good anatomical 
contributions to our knowledge to Hunter, Metcalf, Bancroft and 
others. Our knowledge of the species of Tunicata and of their geographical 
distribution has been widely extended during the year by the systematic 
work of Lohmann, Ritter, Hartmeyer, Pizon, and Herdman. 
