198 
MOLLUSCOIDA. 
H. egertoni^ sp. n., Berehaven, Freland, parasitic on Gonoplax angulata. 
Busk, P. Z. S. 1874, pp. 29 & 30, pi. v. 
Paludicella. On its gemmation, see above, p. 196. 
Hippocrepia. 
Plumatella rcpens. Note on its statoblasts by Horsley, Q. J. Micr. Sci. 
(2) xiv. p. 217, 
Pectinatella magnifica (Leidy) ; Leidy, P. Ac. Philad. 1874, p. 139. 
Rhahdopleura (Alim.). G. O. Sars recapitulates its structure [see Zool. 
Bee. ix. p. 184], and maintains that it is an ancient synthetic form, con- 
necting the Polyzoa with the Hydrozoa ; Q. J. Micr.^ Sci. (2) xiv. 
pp. 23-44, pi. i. E. Ray Lankestcr thinks it more nearly allied to the 
Molluscan type, and endeavours to point out the analogies between 
them, regarding the lophophorc as corresponding to the foot of the 
Mollusca ; tom. cit. pp. 77-81. 
