504 
ME. H. N. RIDLEY OK THE 
P 0 L Y Z 0 A. 
By R. Kirkpatrick, 
Assistant in Zoological Department, British Museum. 
POLYZOA. 
The specimens chiefly encrust shells, and are generally much 
worn away. 
1. Aetea recta, HincJcs. 
2. Synnotum aviculare, Pieper. 
3. SCRUPOCELLARIA FRONDIS, D. Sp. 
4. Cribrilitsia radiata, Moll. 
5. Smittipora antiqua, Busk. 
( Mollia anti qua , Smitt.) 
6. Steganoporella Smittii, Hincks. 
7. Mastigophora Dutertrei, Audouin. 
8. SCHIZOPORELLA UNICORNIS, Johnston. 
9. Lepralia depressa, Busk. 
(JEscharella rostrigera, Smitt.) 
10. Lepralia cleidostoma, Smitt. 
11. Rhynchopora bispinosa, Johnst. — (Encrusting Gorgonia 
axis.) 
12. Cellepora Ridleyi, n. sp. 
13. Microporella yiolacea, Jolinst. — Encrusting Gorgonia 
axis ; (both purple and white varieties). 
14. Crisia Holdsworthii, Busk. 
15. Ahathia brasiliensis, Busk. 
Family Cellulariidie. 
G-enus Scrupocellaria. 
SCRUPOCELLARIA ERONDIS, U. sp. 
Zooecia of medium size, alternate ; area oval, occupying nearly 
half the front of cell ; spines 2-4 on the outer side, 2 on the 
inner ; lowermost spine on outer side bending over the top of 
