230 Transactions 
' Fam. CAMPANULARIDAE. 
Obelia geniculata (Lin.). 
Farquhar, 1896, p. 460: Hilgendorf, 1897, p. 204: Hartlaub, 
p. 362. 
This cosmopolitan species has received numerous synonyms, which 
may be found in Nutting's work on the American Campanularidae, where 
the references to it occupy two and a half folio pages. Hartlaub records 
it from Rangitoto Island. Professor Chilton's specimen is from Oamaru 
rocks (Mr. C. B. "Morr rris). 
Obelia nigrocaulus Hilgendorf. 
Hilgendorf, 1897, p. 203. (Dunedin.) 
” 
Obelia nodosa n. sp. (Fig. 1.) 
Shoots nearly lin. in height, monosiphonie or slightly fascicled at 
base, nearly straight Ый, flexuous above; internodes with a few distinct 
rings at lower end, at top supporting. a hydrotheca with ringed peduncle ; 
a branch or gonangium, or both, springing from axil. 
Hydrothecae campanulate, distal 
portion generally less expanding than 
lower, extreme margin usually everted, 
undulated, sometimes subregularly. 
often simply ragged; diaphragm 
usually oblique. 
Gonothecae on short annulated 
peduncles, with about three inflations 
more or less distinct ; mouth tubular, 
not very wide. 
c.—Waitakerei, Auckland (Chil- 
ton). 
Many of the shoots are mono- 
siphonic, but some become fascicled 
by the formation of stolons which 
originate from apertures formed at Ею. L—Obelia nodosa п. sp. X 40. 
the sides of the apophyses near base 
from which hydrothecae have fallen. Generally only one or two of the 
те apophyses give rise to these stolons, which run down to the hydro- 
iza and are continued over it. Most of the hydrothecae have margins 
desse showing very slight traces of undulations, which are very shallow, 
but some show them more distinctly. 
most characteristic feature is the form of the gonangia, which 
-have three inflations increasing in size upwards. ese vary in degree, 
being more pronounced in some cases than in others. The tubular neck 
lo 
is well developed. 
Obelia coughtreyi n. sp. (Fig. 2.) 
Shoots about 1 in. in height, monosiphonic (1), slightly flexuous ae 
very strongly above; internodes with a few distinct rings at lower en 
at the top supporting a л» with ringed peduncle; а branch or - 
axil. 
oo or both, springing fro 
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