POLYZOA. 
187 
the former Stammstocke^’ (stem- compositions), the latter 
Zellen- oder Brutkapselstbcke (cellular or capsular composi- 
tions) . One instance only is known to him in which the capsules 
or cells arise first from a stem and afterwards from other cells ; 
this is Cellularia chelata (Pall.) [^Scruparia, Busk], observed by 
him at Spezzia. Reichert, Abh. Ak. Berl. 1869, pp. 333-323. 
Ctenostomata. 
Vesiculariada!:. 
Zoohotryon pcllucidum^ Ehrenherg. This curious animal, which was, as 
lately as 1849, still inserted by algologists in the vegetable kingdom, under 
the name Aseothamnion, is fully described, and its relations to the Vesicu- 
lariadm made out, by ~K. B. Reichert, I c. pp. 233-235, 240-261, 257-264, 
pis. 1-6. 
Vtctonella, gen. nov., Kent, J. Micr. Soc. 1870, pp. 36-39, pi. 4. Polypidom 
horny, tubular; cells not deciduous nor separately distinguishable, but 
throughout freely communicating, their terminations flexible and invertilo ; 
no gizzard; eight ciliated tentacles. — V. 2 ^(tvida, sp. n., Victoria Bocks, in 
brackish water, on Cordylophora. The author proposes a new family, lIomo~ 
dicetid< 2 j for this genus, near to the Vesicidariidm, 
PHYLACTOL.EMATA. 
Alcyondla, two different species, and PYedericella sidtana observed in the 
river Main near Frankfort, the first fixed on the shells of Unio^hj F. 0. Noll, 
Zool. Gart. 1870, pp. 17.1, 173. — Cridatella mnccdo?, or perhaps opliidioidcuj 
ITyatt, in the Rhine at the Lorley,” and its locomotion describetl, by the 
same, 1. c. p. 274. 
