Ajjjjendix to Cionistes reticularis. 277 



differs from the sarcode of other Bhizopods in being filled 

 with delicate short fibres instead of the usual molecular 

 matter, aud 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 branches. 



Fig. 6. Summit of one of the tubes of D. erecta, with projecting lobes of 

 sarcode and pseudopodia. 



4. On Lecythia elegans (nov. gen. et sp.) 



This animal, of which I give drawings in PI. XII. fig. 

 10, is found on Sertularia 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 Actinoplirys. 

 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 Sertulariadee in the simple 

 columnar form of its non-tentacled reproductive polyps, and 

 forms the connecting link between these organs in the 

 Tubulariadae and Sertulariadge. 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- ") Clava, Coryne, 

 mentary polyp, as in / &c. 



Generative sacs attached to reproductive alimentary po- S Podocoryna 

 lyp, which differs from ordinary alimentary polyp in > fucicola 

 having fewer tentacles ) (Sars). 



Generative sacs attached to reproductive polyp with rudi- ) Hydradinia 

 mentary mouth and tentacles, as in . . . J echinalo,. 



