Moll. 101 
SALPi^Dj POLYZOA. 
sp. 11 . ?, from the egg into a tailed larva, and its metamorphosis into the 
definitive form, the annular muscles of which begin to act when the tail 
of the larva has disappeared. Zool. Anz. iv. pp. 473-47G & 575 ; abstract 
in J. R. Micr. Soc. (2) i. pp. 879 & 880. 
ApPKNDTCULARIiE. 
E. Moss’s paper on the anatomy of Appcndicularia^ Tr. L. S. xxvii. 
[1871] pp. 299-304, pi. xlvii., has hitherto been omitted from Zool. Rec. 
POLYZOA. 
E. Perrier, in ‘ Les Colonies Animales” (Paris: 1881), discusses the 
Polyzoa in pp. 326-377. He gives a general outline of their organiza- 
tion, considering the cystid and polypid as two distinct individuals mor- 
phologically, though functionally they act as one individual ; in the 
polypid, however, the actions of life are more energetic, and its force is 
therefore sooner exhausted, so that it dies before the cystid, which pro- 
duces a new polypid individual by gemmation. 
The literature of the Polyzoa for 1880 is recorded by J. W. Spengel 
in Zool. JB. Neap. ii. pt. 1, pp. 336-347. 
A large colonial Bryozoon found in the Lake of Ritom, Piora Valley, 
Switzerland, 1829 metres above the sea, by Asper, Arch. Sci. Nat. iv. p. 406. 
Arctic Sea, Franz- Josef Land. 19 species of Polyzoa, including Anar- 
thropora monodon (Smitt), Mucronella vcntricosa (Hassall), Crisia den- 
iiculata (Lam.), and Ilcleropora pclliculata (Waters), not before known 
from the Arctic Seas, the last not even from European seas or the 
Atlantic, collected by B. Leigh Smith, described by Stuart O. Ridley, 
Ann. N. H. (5) vii. pp. 442-457, pi. xxi. 
Glacial Sea of Siberia. Some Polyzoa mentioned by Stuxderg, Sv. 
Ak. Handl. Bih. v. No. 22, pp. 47, 49, 52, 53, 54, 56. 
Firth of Forth. Polyzoa enumerated by Leslie & Herdman, P. Phys. 
Soc. Edinb. vi. 
Mediterranean. Gr. Seguenza’s work on the tertiary Bryozoa from 
Reggio, in Calabria, Mem. Acc. Rom. vi., 445 pp., 17 pis., may he men- 
tioned here, as being an important subject of comparison for the recent 
fauna of the Mediterranean. Some critical notes about it in J. R. Micr. 
Soc. (2) i. pp. 594 & 595. 
New foreign Polyzoa by T. Hincks, Ann. N. H. (5) vii. pp. 147-151, 
pis. viii.-x. and viii. pp. 129-135, pi. v. 
Descriptions of 27 new species of Cellepora collected during the ‘ Chal- 
lenger ’ Expedition by G. Busk, J. L. S. xv. pp. 341-356. The most 
remarkable as to geographical distribution is Cellepora eatonensis, sp. n., 
found at Kerguelen Island and in Magellan Straits, in various depths 
from 5 to 1325 fath. ; C. solida, sp, n., has been found in a depth of 
2600 fath. in 42° S. lat. and 134° E. long. 
Sti'aits of Magellan, S. Brazil, and S. Chili. 33 species of Polyzoa 
collected on the expedition of H.M.S. ‘ Alert,’ among which are some 
identical with European recent or fossil species and several new, are 
enumerated by S. 0. Ridley, P. Z. S. 1881, pp. 44-61, pi. vi. The genus 
