2 Coel. 
XVI. CCEL ENTER ATA. 
[1904] 
Craspedote medusa, Olindias, and some of its allies forms the subject of a 
paper by Goto (79), and Gravier (81) describes a pelagic Cerianthe from 
the Gulf of Cahfornia, Dactylactis henedeni n. sp. Hargitt (94) adds to 
Hydroids a new species from Long Island Sound ; in a second paper he 
deals with some Hydi'omedusce from the Bay of Naples. There is a 
monograph by Jungersen (125) on the Pennatididce^ and Janover (122) 
has devoted much work to the study of the genus Solenocaulon. Nutting's 
(170) monograph on the Sertularidce of America has appeared during the 
year, and Torrey (209, 210) has reported on the Hydroids and Cteiiophora 
of the kSan Diego region. Additions are made by Verrill (220-225) to 
the Anthozoa and Hydrozoa of the Bermudas, West Indies and Brazil ; he 
also has published some notes on the genus Acropora. The faunistic 
work of the year includes Mayer's (155) paper on the Medusse of the 
Bahamas, and McMurrich's (157) on the Actiniae of the Plate Collection. 
HiNDE (104) writes on the structure and affinities of the genus Poro- 
sphcera^ and Kingsley (128) on Cerianthus horealis. From Japan (KiSHi- 
NOUYE (130)) we have some useful notes on the natural history of corals, 
and KiTAHARA (131) reports on the coral fishery of Japan. The results 
of the dredging operations on the West Coasts of Central America and 
California have been given by Marenzeller (152), and include a descrip- 
tion of a new species of symbiotic Hydrocoralline. Swenander (206) 
describes the athecous Hydroids from Drontheim Fiord, and Thomson 
(210) has a note on the gonostyles of two Antarctic Siphoaophora. 
Hydroids collected in various parts of the world (outside Europe) are 
described by Jaderholm (118) from the Swedish National Museum; he 
also has written on the Hydroids collected by the Swedish Antarctic 
Expedition of 1901-1903. Dennant's (35-38) four papers are descrip- 
tive of Australian recent and fossil forms ; he gives many new species 
from the Australian Tertiaries. 
There is a physiological paper by Pratt (177) on the assimilation and 
distribution of nourishment in Alcyonium digitatum. Krempf (136) has 
noticed a transformation of the tentacle apparatus in certain species of 
Madreporaria. A chapter on Coral-reefs occurs in Branner's (17) work 
on the stone corals of Brazil, while Crossland (29) has studied the coral 
formations of Zanzibar and East Africa. 
Matters of a wider biological interest are to be found in Hubrecht's 
(109, 110) papers on the relationships of various invertebrate phyla, of 
Annelids and Chordates, of Ctenophores and Platyhelminths. This is 
also touched upon by Michaelsen (159), and Jennings (123) work is 
upon asymmetry in certain lower organisms and its biological significance. 
There are many papers again on regeneration and regulation. Boring 
(16) writes upon the closure of the longitudinally split Tubularian stems. 
Carlgren's (20) work on the correlation between regeneration and sym- 
metry in Actiniae is perhaps some of the most important that has 
appeared in this field of work this year. Child (24, 25) has written on 
form-regulation in Cerianthus^ and Godlewski (75) in Tuhidaria mes- 
embryanthemam, while King (127) did somewhat similar experiments on 
Tuhularia crocea. Hargitt (93, 95) has published a note on regenera- 
tion in Scyphomedusce and also on the budding tentacles of Gonionemus. 
It has been found, by Loeb (144), that sea- water has much influence on 
the regeneration and growth of Tubularians. Morgan (162, 163) con- 
tinues his work on regeneration and gives an analysis of organic polarity. 
Yerkes (238) writes on the reaction time of Gonionemus murhachii. 
Schultz (200, 201) also writes on regeneration. Torrey's (208) work is 
on the habits and reactions, regeneration and non-sexual reproduction of 
Sagartia davisi. Billard (12) contributes to the study of multiplication, 
regeneration, grafting and variations in Hydroids, and Davenport (34) 
discusses the variation in the stripes on the sea-anemone Sagartia lucice. 
