CELLULARIA PEACHII. 35 



II \BITAT. On stones, shells, zoophytes, &c., from deep 

 water chiefly. 



LOCALITIES. Peterhead ; Wick, rare (C. W. P.) : Bu- 

 channess ; Tynemouth ; Copinstra (Lieut. Thomas) : 

 Northumberland, from the five-men boats, not uncom- 

 mon (Alder) : Shetland, haddock-grounds and Outer 

 Haaf, frequent (A. M. N.) : Scarborough (Bean) : 

 Aberdeenshire (Dawson). 



GEOGRAPHICAL DISTRIBUTION. Bahusia (Loven) ; Spits- 

 bergen, Henloopen, 30-60 fathoms ; King's Bay, muddy 

 bottom 200-250 fathoms (Torell and Swedish Expedi- 

 tion, 1861) : South Labrador, rare (Packard) : Hamil- 

 ton's Inlet, Labrador, 15 fathoms (Wallich) : Gulf of St. 

 Lawrence (Dawson) : St. George's Banks, 150 fms. (Smith 

 and Harger). 



In this species the two rows of cells do not present a 

 perfectly plane surface ; each of them slopes slightly 

 outwards, so that the central line of junction appears 

 elevated, and the front of the shoot somewhat carinate. 

 We may recognize in this, as in other points of structure, 

 an approach to the genus Nellia, Busk, in which four 

 series of cells are so united as to form a subcylindrical 

 shoot. The present form has the closest affinity with the 

 last-named genus, the cells of the two being identical in 

 character ; and if we were to imagine two shoots of Cellu- 

 laria placed back to back and united, we should have a 

 zoarium very like that of Nellia simplex, Busk. 



Cellularia Peachii is furnished with a great number of 

 very long tubular fibres, more or less annulated, which 

 are given off from the dorsal surface, chiefly towards the 

 lower part of the shoots. Many of them arc perfectly 

 simple ; but others terminate in a number of fibrils or 

 rootlets, by means of which they adhere. The shoots are 



D2 



