2 Coel. 
XVI. CCEL ENTER ATA. 
monographed the West Indian Madreporarian polyps, giving attention to 
their reproductive processes, budding, fission and development, as well as 
to their comparative anatomy and histology, with descriptions of species. 
Torrey (170) has added twenty-two new species, and one new genus to 
the Hydroida of the Pacific coast of North America, including an account 
of their distribution. The Medusae of the Tropical Pacific have been 
reported on by Agassiz & Mayer (3). 
A new family of Scyphomedusce from Japan has been erected dm-ing the 
year by Kishinouye (94) under the name of Stenoscyphidce. Kukexthai, 
(97) has revised the Alcyonarian family Xeniidce , and Lameere (101) has 
dealt wfith the origin of Siphonophores. Doderleix (31) treats of the 
genus Fungia. 
Various papers by Duerden deal with the morphology of' the Madre- 
poraria, especially with the significance of budding and fission (42), and 
the increase of mesenteries in Madrepora beyond the protocnemic stage 
(41). The monograph on histology by Schneider (152) includes much 
interesting information relating to the histology of Ctenophora , Hydrozoa, 
and Anthozoa. 
Yerkes (185 & 186) has written on the sensory reactions, and on the 
physiology of the central nervous system of Gonionemci murbachii. 
Hyde (87) also writes on the nervous system of this species, and interest¬ 
ing facts have been published by Perkins (131) showing that in this 
species planulae are budded off asexually. 
In another paper (133) he treats of the phenomenon of degeneration in 
the larvae of Gonionema. 
An exhaustive paper by Harm (73) gives an account of the organo¬ 
genesis of Clava squamata , while Friedemann (52) gives us a study on 
the development of Aurelia aurita. The development of Gonthyrcea loveni 
is described by Wulfert (184), and Perkins’ (132) work on the develop¬ 
ment of Gonionema murbachii will no doubt receive the attention it 
deserves. 
Much work has been done again this year on the subjects of regenera¬ 
tion, grafting, and variation. Morgan’s (115) book on regeneration includes 
frequent discussions of the phenomenon as occurring in Coelenterata. In 
a separate paper (116) he contributes to our knowledge of the special facts 
regarding regeneration of Tubularia. Godlewski (61), working on the 
same genus, deals with regeneration after longitudinal splitting, while 
Driesch (35) describes two new methods of regulation that he has also ob- 
seived in Tubularia. This same genus served as the subject for Stevens’ 
(160) experiments on regeneration; he also studied its occurrence in 
Antennularia (161). Hargitt (72) performed experiments on Gonionema 
respecting the regeneration of the marginal organs of the medusae, of the 
manubrium and of the radial canals. Hazen (75) has studied the results 
of rather similar experiments in Hydractinia and Podocoryne , publishing 
a separate paper on the regeneration of an oesophagus in Sagartia (76). 
Work on grafting has been done on Hydra by Hefferan (77 & 78), and 
Peebles (129). Rowley (148) describes the histological changes in 
Hydra during regeneration. Torrey (171) has published an interesting 
account of variation in Metridium , and Hargitt (71) deals with the same 
subject as occurring in Hydromedusce. Schultz (154) discusses the re¬ 
lation of regeneration to development and budding in Coelenterata. 
