598 Notes on the Natural History of East Finmarh. 



1880. Memhranipora princejjs, Hiucks, Brit. Polyz., Introduction, 



p. Ixxiii, AYOodcut xxxv. 

 1880. Membrmiipora viina.v, Hincks, Brit. Polyz., Introduction, 



p. Ixxi, woodcut XXX. a, and p. 169, pi. xxii. figs. 2, 2 a-c. 

 1894. Ramphonotus vimav, Norman, " A Month on the Trondlijem 



Fiord," Ann. & Mag. Nat. Hist. ser. 6, vol. xiii. p. 122. 



Svserholt, East Finmark [Nordgaard) . Specimens iu my 

 collection are from Shetland; Bergen and Trondlijem Fiords, 

 Norway [A. M. N.) ; Gulf of St. Lawrence {Whiteaves). 

 The specimens from the St. Lawrence have the zooecia o£ 

 very much larger size than those from the other localities. 



It escaped my memory when I was writing my Trondhjem 

 Fiord report that Hinclcs had, in the introduction to his work, 

 called attention to the remarkable avicuiarium in this species, 

 and had given the form in which the avicuiarium is fully de- 

 veloped a different specific name (M. 'princeps, see p. Ixxiii, 

 note) ; but a comparison of his woodcuts xxx. a and xxxv. will 

 indicate, what is really the case, that the latter is only the 

 more developed state of the former ; and although on many 

 polyzoaries only the first form will be found, the latter 

 occurs both on Shetland and Norwegian specimens in my 

 collection. The avicularia are very easily abraded in this 

 species ; and polyzoaries always have far more of the holes 

 which indicate where avicularia have been than avicularia 

 actually present (see Hincks^ pi. xxii. fig. 3 j no perfect 

 avicuiarium is here shown) . 



DESCRIPTION OF PLATE XIII. 



This Plate is chiefly occupied with figures of the backs of certain 

 species in order to illustrate the pore-chambers. They must be regarded 

 as in a great measure diagrammatic ; for whereas in some species the 

 pore-chambers are seen very easily, in other cases they are so hidden iu 

 the side walls that they are very "difiicult to observe. 

 Fig. 1. Pore-chambers of Cauloramphus spinifer. 



2. „ „ Callojmra Ibieata. 



3. ,, „ C'iiIluj)ora cruticula. 



4. „ „ Ellmna levata. 



5. ,, ,, A7)iphiblestn(m Flemingii. 

 G. „ „ Amphihlestrum trifoliuin. 



7. „ „ Raniphonotus minax. 



8. „ „ Alderina solidula ; a young zoojcium at the edge 

 of a zoarium, 



9. Zooecium of Callopora Whiteavsii, sp. n. 



10. Zooecium of Callopora unicornis, vai'. armifera, Hincks, with the 



usual avicularia. 



11. Zooecium of the same, the last with gigantic avicuiarium on 



ooecium. 



12. Oochilina tensa, sp. n. 



