238 . ME. G. BUSK ON THE POLTZOA 



Island, Waigat Strait, entrance of Baffin's Bay, 175 fms. {Nor- 

 man). 



A. specimen from Spitzbergen, for which I am indebted to Pro- 

 fessor Smitt, incrusts JEschara elegantula, and which is named by 

 him " Discopora sincera" differs from Capt. Feilden's specimens 

 and those collected by Dr. Wallich, and in fact from all others that 

 have come under my observation, in the absence of any avicularium 

 on the side of the cell, and in the larger and more uniform size of 

 the zocecia. Mr. Hincks's figure (I. c.) exactly represents Dr. 

 Wallieh's and Captain Feilden's specimens. This difference, 

 however, considering the other identical characters, cannot be 

 regarded as indicative of more than a variety. 



2. Hemeschaea Landsboeoyii ?, Johnst. (sp.). 



Lepralia Landsborovii, Johnst. (pars) ; ? Brit. M. Cat. p. 66, pi. 86. 



fig. 1. 

 Escharella Landsborovii (forma typica) (pars), Smitt, I.e. 186/, pp. 12 



& 94, pi. xxiv. figs. 60-62 (non cetera). 



Hal. Cape Eraser, 80 fms. (H. W. F, on worm-tube) ; Spitz- 

 bergen (Smitt) ; Greenland, Copenhagen Museum (teste Smitt). 



I follow Professor Smitt in terming this form Landsborovii, 

 but am by no means satisfied that it should be referred to that 

 species. There is no doubt, however, of the identity of Captain 

 Feilden's specimens with the form figured as above cited by Pro- 

 fessor Smitt. I should be more inclined to refer his Escharella 

 porifera to that type. 



Fam. 6. Cellepoeidj. 



Genus Cellepoea, Fair. 

 1. Cellepoea ceevicoenis, mini. PI. XIII. figs. 6, 7, 8. 



Cellepora cervicornis, Busk, Ann. N. Hist. ser. 2, vol. xviii. p. 32, pi. I. 



fig. 1. 

 Cellepora pumicosa, Sars, Reise Lof. og Finm. ; Danielssen (teste Smitt). 

 Celleporaria incrassata, Smitt, I. c. 1867, pp. 33 & 198, pi. xviii. figs. 212- 



216; LfQrbigny (pars); now Lamarck. 

 Celleporaria surcularis, Packard, teste Smitt. 



? Cellepora coronopus, S. Wood, Crag Polyzoa, p. 57, pi. ix. figs. 1-3. 

 Cellepora incrassata, Hincks, I. c. p. 105. 



Hab. Cape Napoleon, Cape Fraser (H. W. F.) ; Norway and 

 Finmark (M l Andrew, Loven, Sfc.) ; Spitzbergen and Greenland 



