Appendix to Cionistes reticularis. 
277 
differs from tiie sarcode of other Ehizopods in beiug filled 
witli delicate short fibres instead of the usual molecular 
matter, and contains, both within the shell and tubes, the 
highly refractive bodies I have mentioned in a former paper 
as ova. 
Explanation of Plate XI. 
Fig 4. Dendrophrya erecta seated on a portion of stone, and showing pseudo- 
podia projecting from summits of brandies. 
Fig. 6. Summit of one of the tubes of D. erecta, with projecting lobes of 
sarcode and pseudopodia. 
This animal, of which I give drawings in PI. XII. fig. 
10, is found on Serfularia pumila. It is exceedingly 
minute, and requires high microscopic power and careful 
adjustment of light for its accurate definition. The body 
is flask or carafe-shaped, mounted on a long, fine, rigid 
pedicle, and enclosed in a closely fitting envelope. The 
summit of the body is dilated, and furnished with a variable 
number of long, slender, divergent processes or tentacles, 
which appear to correspond with those of Actinophrys. 
When the tentacles are contracted, they become capitate, 
and assume the form of a bossed crown, as shown in the 
figure. 
Appendix to Cionistes reticularis (Kionistes retiformis), printed at p. 91. 
This zoophyte resembles the Sertulariadse in the simple 
columnar form of its non-tentacled reproductive polyps, and 
forms the connecting link between these organs in the 
Tubulariadse and Sertulariadse. It exhibits the most de- 
graded form of the reproductive polyp, previously to the 
latter being altogether dispensed with and the generative 
sacs being developed directly from the polypary. Thus we 
have, in the chain of degradation, — 
Generative sacs or medusoids attached to ordinary ali- "I Clava, Coryne, 
mentary polyp, as in . . . . . .J &c. 
Generative sacs attached to reproductive alimentary po- ] Podoa ryna 
lyp, which differs from ordinary alimentary polyp in > fucicola 
having few^er tentacles ) (Sars). 
Generative sacs attached to reproductive polyp with rudi- ) Hydradinia 
4. On Lecythia elegans (nov. gen. et sp.) 
mentary mouth and tentacles, as in 
