FAUNISTIC, PHYSIOLOGICAL. 
Gcel. 11 
Maas (51) comes to the conclusion that the Aglauridce occur chiefly in 
the northern part of the Atlantic ocean, the Trachymenidcc in the median 
part, and the Geryonidce in the southern part. 
Cunningham (17) records the occurrence of the Leptomedusan 
Saphenia mircibilis in the plankton, near the Eddystone. 
Leidy (49) exhibited drawings of a Beroid, 1-4 inches long, from the 
New Jersey coast, probably identical with Idyia roseola , of Agassiz. 
Dixon (19) gives a list of the sea-anemones found in Dublin Bay. 
Prouho (GO) found Gonactinia prolifera on the coasts of Roussillon. 
The characters of the Mediterranean specimen are the same as those of 
the Norwegian. He describes and figures the transverse fission of this 
form. The stomodmum of the lower individual does not exist before the 
separation, but is formed by invagination subsequently. Scissiparity and 
sexual reproduction occur together, thus there is no alternation of 
generation. 
Lacaze-Dutiiiers (47) calls attention to the existence of Kopbo- 
belemnon at Banyuls, and points out that the fauna of Roussillon is very 
rich in rare forms. 
Grieg (29) describes the occurrence of the three Alcyonarians, 
Isidella hippuris, AntJiolhela grandiflora , and Chimdaria arctica , on the 
coasts of Norway. 
Coral Reefs. 
Lister (50) gives an interesting and valuable account of the living and 
fossil reefs of the Tonga group. 
Hickson (36) gives an account of the different forms of animal life 
met with on a coral reef in the East Indies, and comments on the colours 
and markings of the Ccelentcrata, Arthropoda , and Pisces. 
Goebeler (27) writes some articles on coral reefs. 
IV.— PHYSIOLOGICAL. 
Wilson (77) comes to the conclusion that Hydra has an innate tendency 
to wander, and that light and oxygen operate by modifying indefinite 
movements that tend to occur irrespectively of external stimuli. 
Nussbaum (59) corroborates his previous conclusion that a Hydra , 
when turned inside out and fixed by a needle, recovers itself by a 
process of overgrowth and turning outside in. A considerable part of 
the paper is occupied by a discussion of Ischikawa’s observations and 
opinions. 
Bigelow (5) describes some points in the physiology of the Siphono- 
phoran Caravella maxima. 
Zoja (82) describes a number of experiments he made on Hydroids, 
more particularly Podocoryne and Pennaria, to determine the effect of 
stimuli upon the contractility of the polyps of the colony. 
