"^'iSi!^,i:t" ^MMm in the Uni.

POLYZOA. 187
the former " Stammstocke" (stem-compositions), the latter
" Zellen- oder Brutkapselstbcke " (cellular or capsular compositions)
. 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. 233-323.
CTENOSTOMATA.
VESICULARIADJE.
Zoobotryon pellucidum, Ehrenberg. This curious animal, which was, as
lately as 1849, still inserted by algologists in the vegetable kingdom, under
the name Ascothamnion, is fully described, and its relations to the Vesiculariadas
made out, by K. B. Reichert, I. c. pp. 233-235, 240-251, 257-264,
pis. 1-6.
Victoriella, gen. nov., Kent, J. Micr. Soc. 1870, pp. 35-39, pi. 4. Polypidom
horny, tubular; cells not deciduous nor separately distinguishable, but
throughout freely communicating, their terminations flexible and invertile ;
no gizzard; eight ciliated tentacles.— V. pavida, sp. n., Victoria Docks, in
brackish water, on Cordylophora. The author proposes a new family, Homodieetidce,
for this genus, near to the Vesiculariidee.
PHYLACTOL^EMATA.
Alcyonella, two different species, and Fredericella sultana observed in the
river Main near Frankfort, the first fixed on the shells of Unio, by F. C. Noll,
Zool. Gart. 1870, pp. 171, 173.—Cristatella mucedo?, or perhaps ophidioides,
Hyatt, in the Rhine at the " Lorley," and its locomotion described, by the
same, I. c. p. 274.
o2