Dr. M. Coughtrey on New-Zealand Hydroida. 25 



intervals the stems of each subcolony ; but those nearest the 

 parent stolon are most abundant in calycles. 



The same fucus [M. pyrifera) on which 0. geniculata is so 

 frequently found forms the chief part of those islands of sea- 

 weed so abundant in the Southern Ocean between latitudes 

 45° and 50°, especially in the vicinity of the Crozet Isles and 

 of Kerguelen's Land ; and it has been my good fortune during 

 two separate voyages to secure by appropriate tackle detached 

 masses of this seaweed. I have examined them on all occa- 

 sions with great care, and have been surprised to find a total 

 absence of animal life ; wliile other specimens of this seaweed, 

 bearing every appearance of having been floating on the sur- 

 face for days, and that had been washed ashore, had numerous 

 clusters of Hydroida, Polyzoans, and Cirripeds in great pro- 

 fusion. 



Ohelia pygmcea (?), sp. nov. provisionally referred to this genus. 

 PL III. fig. 3. 



Shoots very profuse where the sponge-patches are on stems 

 of Boltenia pechmcuJata, Milne-Edwards. It arises from a 

 creeping filamentous hydrorhiza, grows to the height of | of 

 an inch, extremely delicate and transparent. Hydrocaulus 

 branched ; branches ringed just above their origin ; hydro- 

 caulus strongly ringed beyond where branches arise. Inter- 

 nodes between pedicels of hydrothecaj irregularly ringed (from 

 six to twenty rings). Hydrothecee broadly campanulate, rim 

 entire, alternate ; extremity of each branchlet divided into two 

 hydrotheca? ; pedicels annulated (ten to fifteen rings). 



GonothecEe ? 



Genus Campanularia. 



Campanularia Mlahiata^ raihi, loc. cit. p. 291, pi. xx. 

 figs. 46 & 49. 



I have nothing fresh to add to my previous description of 



this species. 



Campanularia Integra ('?), Hutton, fig. 45 (my paper). 

 In describing this species, which I figured, I mentioned 

 that it did not agree with G. integra of Johnston. Further 

 observation has confirmed this opinion, and I now believe it 

 to be C. caliculata, Hincks, and to agree specially with the 

 variety, fig. 2 b of plate xxxi. ' British Hydroid Zoophytes.' 

 The annulation of the pedicel is a little too strongly marked in 

 my figure*. 



* On the smaller seaweeds just beneath low-water mark, Port Chalmers, 

 I got a small species in general habit and size very like C. calicithta. 



