Dr. J. Gwyn Jeffreys on Buccinura. 423 



Polyzoa rather than to the Ccelenterata ; and on this point I 

 prefer at present to come to no absolutely final conclusion, 

 though my opinions lean decidedly towards the latter as a 

 proper resting-place for the genus. It must, however, be 

 evident that in supporting (as many palaeontologists now do) 

 the Polyzoan affinities of Monticulipora, little or no weight 

 can in future be attached to the likeness which the genus 

 shows to Heteropora. It may be also pointed out that, in 

 our present ignorance of the animal of Heteropora, it is, per- 

 haps, not entirely without hazard that we should unhesita- 

 tingly assign it to a place among the Polyzoa. I do not at 

 all overlook its resemblance to many undoubted Cyclostoma- 

 tous Polyzoa, nor am I in any way prepared to deny its 

 Polyzoan affinities; but I cannot entirely ignore the fact 

 that the pore-canals, septal spines, and tabula?, which are now 

 known to exist in some species of the genus Heteropora, are, 

 at any rate, as reconcilable with its reference to the Coelen- 

 terata as to the Polyzoa. 



LV. — On the Northern Species 0/ Buccinum. 

 By J. Gwyn Jeffeeys, LL.D., F.R.S. 



The late Prof. Stimpson published, in the f Canadian Natu- 

 ralist ' for October 1865, a " Keview of the Northern Buc- 

 cinums," and gave sixteen species with fifteen synonyms. 

 Having had the privilege of examining his types, as well as 

 those of Linne, Fabricius, Turton, Bennett, Broderip, Forbes, 

 Moller, Hancock, Morch, Eeeve, G. 0. Sars, Friele, Ver- 

 kriizen, and others, I thought a revised list of the species 

 might be useful, and I now submit it. I recognize eight species 

 only, with forty-six synonyms ; and I believe even that number 

 of species may be reduced when more intermediate forms are 

 observed. Their fecundity and extensive distribution in the 

 northern hemisphere, added to the difference in the conditions 

 of habitat and temperature, would account for the great varia- 

 bility of the species. Buccinopsis connects Buccinum with 

 Fusus. The generic name Tritonium is undoubtedly subse- 

 quent to Buccinum, and included Fusus and what I consider 

 its subgenera, viz. 8ip>ho, Neptunea, Chrysodomus, Volutopsis, 

 and Boreofusus. 



1. Buccinum glaciale, Linnd. 



B. carinntum , Phipps. 

 B. polaris, Gray. 

 Var. B. angulosum, Gray. 



