TRANSACTIONS OF MICROSCOPICAL SOCIETY. 
DESCRIPTION OF PLATE V, 
inustrating Professor Allman^s paper on the Structure of 
Carduella cyathiformis. 
Eig. 
1. — A group of Carduella cyathiformis, attached to a stone. The left- 
band figure represents the anhnal in a state of contraction. 
2. — Carduella cyathiformis, outline to show the natural size. 
3. — Longitudinal section (semi-diagramatic) of Carduella cyathiformis. 
4. — Transverse section (semi-diagramatic) of Carduella cyathiformis. 
The following letters indicate the corresponding parts in figures 3 and 4 : 
a. — External body-walls or umbrella. 
h. — Stomach. 
c. — Generative bands. 
d. — Vertical lamellse. 
e. — Longitudinal ridges giving attachment to the external edges of the 
lamellae, and traversed by a canal. 
/. — The four external spaces. 
g. — The four internal spaces. 
h. — The oral disc. 
I. — Circular canal. 
h. — Tubular appendages of stomach. 
/. — Sphincter muscle. 
m. — Abortive tentacle. 
5. — Ovum. 
6. — Spermatozoa 
