PAtJNlSTic, HYbRozoA. OoeL 11 
of the Florida and Gulf Streams occur south of them, and vice versa ; 
a long description of the distribution and occurrence of the species is 
given in this paper by the author. 
Chun (26) states that the Monophyidce are only known in the Mediter- 
ranean and in the temperate and tropical zones of the Atlantic and 
Pacific Oceans. They appear to be entirely absent from colder waters. 
An interesting point is that the Pacific and the Atlantic species are very 
closely allied. 
De Lacaze-Dutiiiers (52) calls attention to the immense number of 
Scyphistomas which appeared in one of the tanks of the laboratory at 
Arago. Not a single Ephyra , however, was seen. 
Vanhoffen (77) adds a note to a previous communication on the 
geographical distribution of Nausithoe punctata and some undetermined 
species of Pelagia. 
Beaumont (8) gives a list of Lucernarians of the Isle of Man, and 
mentions one species of IJaliclystus as being probably new. 
He human (40) gives a list of tho Alcyonaria and Zoantharia colloctod 
by him in Norway. 
Saville Kent (50) gives art account of the fauna of the Great Barrier 
Reef of Australia. 
IV.— NEW GENERA AND SPECIES. 
HYDROZOA. 
Gymnoblastea. 
Syncoryne crassa , 0-2 metres, Amboyna ; Pictet (66), p. 8. 
^ Sphcerocoryne , n. g. Hydrorhiza rampant, filiform, and ramified. Hydranths 
in the form of an almost spherical mass. Tentacles capitate, dis- 
posed in whorls arranged round the median zone of the hydranth. 
Medusa buds sessile between the tentacles, Medusa free ? S. bedoti ; 
Pictet (66), Amboyna. 
Tubularia viridis ; Pictet (66), p. 17, Amboyna. 
New family Myrionemid;e. The hydranths have a hypostome which is 
trumpet-shaped and surrounded by numerous filiform tentacles 
disposed in many whorls. Myrionema amboinensis, n. g. & sp. ; 
Pictet (66), 1 metre, Amboyna. 
Halecium simplex , p. 22, Laminarian Zone. U.humile , £. 23, Amboyna; 
Pictet (66). 
Olytea trigona , p. 33, 1 metre. 0 . arborescens , p. 34, Amboyna ; Pictet 
(GC). 
La/cea triaxialis , R., = L. dimosa , ? Kattegat; Levinsen, (57) p. 381. 
Umbrellaria , n. g. HydrocanluS rudimentary covered by a rudimentary 
perisarc. Hydranths with a single whorl of filiform tentacles. 
Hypostome conical. Hydrorhiza filiform, ramified, creeping. Netrta- 
tocysts of - 2 forms. Gonosome unknown. U. aloysii \ Zoja, (85) 
p. 520, Naples Aquarium. 
