ON THE POLYZOA OF THE NORTH-POLAR EXPEDITION. 231 



List of Polyzoa collected by Captain H. W. Feilden in the North- 

 Polar Expedition ; with Descriptions of new Species. By 



GrEORGE BUSK, E.K.S. 



[Bead June 15, 1880.] 

 (Plate XIII.) 



Suborder I. CHEILOSTOMATA, Busk. 

 Earn. 1. Cellulariid.e, Busk. 

 Genus Scrupocellaria, Van Ben. 



1 Scrupocellaria scabra, Van Ben. (sp.). 



Cellurina scabra, Van. Ben. Bull. Brux. t. xv. p. 73, figs. 3-6. 



Cellularia scabra (forma typica), Smitt, Ofvers. Skand. Hafs-Bryozoer, 

 186/, pp. 283 & 314, tab. xvii. figs. 27-34. 



Cellularia scrupea, Alder, Trans. Tynes. Field-Club, vol. iii. p. 148. 



Scrupocellaria scrupea, Busk, Quart. Journ. M. Sc. iii. p. 254 (non 

 aliter). 



Scrupocellaria Delilii, Alder, ib.n. ser. iv. p. 107, pi. iv. figs. 4, 8 ; ? Busk, 

 I.e. vii. p. 65, pi. xxii. figs. 1-3. 



Scrupocellaria scabra, Norman, On Rare British Polyzoa, Q. J. Mic. Sc. 

 viii. p. 214; Hincks, Polyzoa from Iceland and Labrador, Ann. N. 

 Hist. Jan. 1877, p. 98. 



? Crisia Delilii, Audouin, Savigny, pi. xii. fig. 3. 



Hob. Arctic Sea, August 11, 1875, 13-15 fms., stony bottom (H. 

 TV. F.) ; Sir Edward Belcher's Expedition ! ; Hamilton Inlet, Lab- 

 rador (TVallich) ; Godhavn Harbour, Disco, 5-20 fms. {Norman)', 

 Sabine Island, German Polar Expedition (teste Hincks) ; Parry's 

 Island, Spitzbergeu, 6-150 fms. (Smitt): Britain (Norman); 

 Northumberland coast (Alder) : coast of Belgium (Van Ben.). 



Upon further consideration of this species, I am inclined to 

 believe with Prof. Smitt and Mr. Norman that the northern form, 

 first accurately defined by M. Van Beneden, is not identical with 

 that to which, from its resemblance to Savigny' s figure, I gave 

 the name of Scrupocellaria Delilii ; this was collected by Mr. 

 J. Y. Johnson at Madeira, and I have also seen a well-marked 

 specimen from Suda Bay, Crete, for which I am indebted to Prof. 

 W. K. Parker. In this latter more especially, the great size of 

 the lateral avicularia and the upright position and large size of 

 the vibracularium clearly indicate that it represents the species 

 figured by Savigny, and these are precisely the characters noticed 

 by Mr. Norman (I. c. p. 215) as distinctive of S. JDelilii from 



