Dr. M. Cough trey on New-Zealand Hydroida. 31 



The British species is much the finer aud slenderer of the 

 two ; the pinnee are longer, the hydrothecje more evenly tubular 

 and free from dentations, while the absence of transverse 

 wrinkles over the whole of the ovarian capsules is marked, 

 though I have gathered British specimens in which the prox- 

 imal three fourths of these capsules was strongly and deeply 

 wrinkled. 



I notice that the southern specimens bear the same relation 

 to the east-coast ones as Mr. Norman's Shetland variety does 

 to the ordinary British species. 



Family PlumulariidaB, Hincks, Brit. Hydr. Zooph. 



I intend to be very brief regarding the specimens under this 

 head at present, and only to give workers a few items of im- 

 portance about them, until I have the opportunity of making 

 more observations. 



Genus Antennularia. 



Antennularia antennina of New Zealand is identical with 

 the British species. 



Genus Aglaophenia. 

 Aglaophenia pennatula. 



I have recently got several fresh specimens of tliis, and I 

 am satisfied it is different ixonx A. pennaUda (Hincks). In 

 my sketch fig. 37, pi. xx. loc. cit.^ the calycles are not as tubular 

 as in nature. 



Aglaoplienia Huttoni and^. mcisa, mihi, loc. cit. pp. 289, 290. 

 I have not yet obtained fresh specimens of these. 



Plumularia simplex^ mihi, ought to be discarded and placed 

 among the Sertulariidte. I was misled in my first specimen 

 by distorted appearances ; but fresh specimens proved to me 

 that I had been wrong. I think it fair to acknowledge mistakes 

 as freely and as early as possible. I will place this species in 

 its proper position in a future paper. 



In conclusion, allow me to state that I should be obliged if 

 authors in this department would exchange with me their 

 papers for specimens. 



