258 Rev. J. Il. Crawford on the 
In Athecata, St. Andrews compares unfavourably with the 
other two stations, the proportion being 10 species against 16 
for Heligoland, and 25 for Plymouth. In Thecaphora, on 
the other hand, St. Andrews has a decided advantage, num- 
bering 53 species, against 35 for Heligoland and 36 for 
Plymouth. When Athecata and Thecaphora are placed 
together, St. Andrews still retains the lead, with 63 against 
61 and 51. In Medusoids the numbers recorded are still 
more decidedly in favour of St. Andrews. 
The Plymouth Hydroids and Medusew are taken from the 
‘ Journal of the Marine Biological Association’ for November 
1890 and ‘ Faunistic Notes at Plymouth during 1893-1894,’ 
by Walter Garstang, M.A.; those of Heligoland from 
‘ Beitriige zur Meeresfauna von Helgoland.—lV. Die Coelen- 
teraten Helgolands,’ vorliiufiger Bericht von Dr. Cl. 
Hartlaub, 1894. 
ATHECATA, 
a F 
‘ rd 
6 Fe 5 
a 2 5 
A ey 
< A mp 
43 ~ 2 
op) 4 ra) 
I, CLavip™. 
Clava multicormis,.; . 0 s<000% x54 x ‘% % 
BOUAMATA . 1s .seserecenss as . 
rey 5 0 Ney A rR PL 3 i$ 
—— leptostyla .....6...s0000-: > + 
Tubiclava cornucopie# ........+. a 
Il. Hypractiniipa. 
Hydractinia echinata .......... PY # * 
Il. Popocorynip~«. 
Podocoryne cornea ........00. M % 
IV. Corynip™. 
Coryne vaginata ........+s6045 ” if 
See 60) SOTECCNIL,.i:, +45 cae 4 + 
WATINIOULAIIO, «+5515 scien # 
REPEL 35 sino ys 35 1a owas “9 #* 
MONMTACAOML od i) i's + sv eels M * 
Syncoryne Sarsii .............. M 7 * 
E98 0 kp a's" 9 co S/R M * « M 
