JOURNAL OF MICROSCOPICAL SCIENCE. 
DESCRIPTION OF PLATE VIII, 
Illustrating Professor Allman’s Paper on llhabdopleura. 
Fig- . ... 
1. — A portion of the coenoecium, with the contained polypides, of Rhab- 
dopleura Normani, very much enlarged. 
a , a, free annulated terminations of the tubes, b, b, polypides. 
b', U, shield-like process of the lophophore. c, c, funiculus. 
d, d, chitinous rod (blastophore). e, e, statoblasts. f, f bud- 
ding polypides. 
2. — Polypide withdrawn from the tube, and still further enlarged. 
a , lophophore, with the tentacles, b, shield, c, stomach of polypide. 
d, d, funiculus, with its enlargements, d', d\ great retractor 
muscle of polypide, accompanying the funiculus, e , enlarged 
termination of the blastophore, to which the funiculus and re- 
tractor muscle are attached. 
3. — Statoblast. 
a , the statoblast. b, b, the blastophore. 
4. — A piece of the adherent portion of the coenoecium tube, to show the 
peculiar markings on its surface. 
6. — Very early stage of polypide bud. 
6. — A somewhat more advanced stage. 
a, the left of the two fleshy plates between which the body of the 
developing polypide is included, b, the two arms of the young 
lophophore, protruded from between the two plates, and as yet 
without any indications of tentacles. 
7. — The polypide bud in a still more advanced stage. 
a, the lateral plates, b, the arms of the lophophore protruded from 
between them, and now showing the commencing tentacles in the 
form of tubercles projecting from their sides, c, the fundus of 
the stomach projecting from between the distal edges of the 
plates, d, the funiculus. 
8. — The polypide bud, still more advanced in its development. 
a, the lateral plates, b, the arms of the lophophore, now carrying 
short but distinct tentacles, c, fundus of stomach, d, funiculus. 
9. — A piece of the chitinous rod or blastophore taken from a young branch, 
to show its axile cavity. 
10 . — Rhabdopleura Normani , natural size. The blastophore, with its attached 
polypides, is seen creeping over the surface of a fragment of mussel 
shell ; the free terminations of the tubes are seen extending beyond 
the broken edge of the shell. They are not represented on the 
rest of the specimen. 
