THE DEVELOPMENT OF ALCYONIUM DIGITATUM. 
43 
The Development of Alcyonium digitatum, 
with some notes on the Early Colony 
Formation. 
By 
Annie Matttiews, JJI.Sc. 
With Plates 3-5 and 51 Text-fignres. 
Table of Contents. 
1. Preface .... 
PAGE 
43 
2. Introduction 
44 
3. Methods .... 
44 
4. General Account 
45 
5. Colony Formation . 
55 
6. Food .... 
59 
7. Segmentation 
60 
8. Pre-planula and Planula Stages, followed by Settling of 
Larva ..... 
65 
9. Mesogloea .... 
70 
10. Mesenteries 
72 
11. Tentacles, Mouth and Stomodaeum 
78 
12. Spicules .... 
80 
13. Mesenteric Filaments 
81 
14. Summary .... 
86 
15. Literature. 
87 
1. Preface. 
I take this opportunity of thanking the Council of the 
Marine Biological Association for the use of a table while 
working out these results. Also I gladly acknowledge the 
kindly and continued help given me by Dr. Allen and the 
various members of his staff. This generous aid rendered 
