Tun . 1 
VI. TUNICATA. 
BY 
Professor W. A. Herdman, D.Sc., F.R.S. 
CONTENTS. 
Page 
Introduction 1 
I. Titles 1 
II. Biology 2 
A. Anatomy 2 
b. Embryology ..... 3 
o. Geographical Distribution 4 
III. Systematic 4 
INTRODUCTION. 
Amongst the more important publications of the year we must reckon 
Seeliger’s numbers 6 to 10 of Tunicata in Bronn’s “ Thier-Reich.” 
They contain the conclusion of the account of the Appendiculariidce , and 
the commencement of the detailed account of the structure of the Asci- 
diacea. We may also specially note Ritter’s preliminary account of a 
remarkable new type of Compound Ascidian from California which unites 
the structure of a Polyclinid with the general appearance of a Clavelinid. 
It will require the formation of a new family. The other papers of this 
year seem of minor importance, and there is a curious absence of any 
dealing with systematics. 
I. TITLES. 
Bancroft, F. W. Notes on Chelyosoma productum, Stimp. Science, new 
series, v, No. 115, p. 435, 
