8 0cel. 
CCELENTERATA. 
Nussbaum, M. Naturgeschichte der Genus Hydra. Biol. Centralbl. vi 
(1886), pp. 570-572 [see 1887]; Tag. Deut. Nat. Vers. 
Trembley’s assertion that in Hydra turned inside out endoderm be- 
comes ectoderm, &c., is incorrect.; the layers are constant ; a new ecto- 
derm formed from tentacles and basal pore. 
°Paldontologie fran 9 aise, ou Description de la France. Zoophytes, viii, 
2e s6r. Paris (G. Masson): 8vo. 
°Pocta, P. Notiz iiber eine neue Korallengattung aus dem bohmischen 
Cenoman. Verh. geol. Reichsanst. 1886, pp. 119 & 120. 
Quelch, J. J. Report on the Reef-Corals collected by H.M.S. ‘ Chal- 
lenger’ during the years 1873-76. Chal. R£p. xvi, 203 pp., 12 pis. 
N. gg., Cylloseris , Domoseris, Moseleya , Napopora , Physogyra , Sandalo - 
litha, Tichopora , Tichoseris. 
Rominger, C. On the minute structure of Stromatopora and its allies. 
P. Ac. Philad. 1886, pp. 39-56. 
A criticism of H. A. Nicholson & F. Murie’s memoir on Stromato- 
pora (1879). 
Salensky, W. Die Urform der Heteroplastiden. Biol. Centralbl. vi, 
p. 514 T 525. [Soo Protozoa'] 
Primitive metazoon vol vox-like ; archenterou a genitocoele. The 
blastocoele a new formation. 
Sclater; W. L. Stephanotrochus moseleyanus , n. sp. . P. Z. S. 1886, 
pp. 128-136, 3 pis ; J. R. Micr. Soc. vi (4), p. 627. 
Finest specimen of genus ; first in British seas ; differs from recorded 
species in greater development of pali, stouter primary and secondary 
septa, of which five cycles. The coral suggests that theca is formed from 
fused peripheral ends of septa. Four cycles of tentacles. Probably 
dioecious. 
Studer, Th. Ueber Bau und System der achtstrahligen Korallen. 
MT. Nat. Ges. 1886, pp. xiii & xiv. 
Tomes, R. F. On the Occurrence of Two Species of Madreporaria in 
the Upper Lias of Gloucestershire. Geol. Mag. iii, pp. 107-111. 
Ulrich, G. 0. Contributions to American Palaeontology. Vol. I. 
Cincinnati. 
Descriptions, inter alia , of New Silurian and Devonian Corals. 
Ussow, M. Eine neue Form von Siisswasser Coelenteraten. Morph. 
JB. xii (1886), pp. 137-153, 2 pis. [Trans., Ann. N. H. xviii, pp. 
110-124 ; J. R. Micr. Soc. vi (5).] 
Description of structure and life-history of Polypodium hydriforme : 
(1) a parasite in ova of Acipenser rufhenus in the form of a cylindrical, 
spirally twisted tube, with numerous lateral buds; (2) a free-living 
stage, equipped with 24, 12, or 6 tentacles, and dividing very frequently ; 
(3) presumably also as a sexual form. A hydroid organism, with a 
motile ‘ trophosome,’ passing through various asexual generations before 
