PLATES IN VOL. XV. 



Plate L New species of Diatomaceae. 

 II. Sertularia alata. 



III. Campanularia Integra. — Halia prsetenuis. — Anomalous Oyster- 

 Shell. 

 IV 

 V, 

 VI 



vn.J 



VIII. Development of Actinophrys Sol. — New species of Leech. — 

 New species of Algae. 



IX. New British Diatomaceae. 



X. 



Fossil Echinoderms from the Island of Malta. 



X "1 

 -jrj' |- British Phalangiidae. 



