26 EUORATIID.E. 



Peachii either from Shetland or the Northumberland 

 coast, probably the former (T. H.) . 



Scruparia clavata is a free grower : in Filey Bay, where 

 it is abundant, it spreads luxuriantly over the tufts of 

 Grisidia, creeping along the stems, and sending off its 

 linked cells at intervals as erect and slender shoots. It 

 presents a curious diversity of appearance now a single 

 series of graceful elongate cells, now a double line in 

 which the cells are shortened and the general aspect is 

 completely changed. The ovicells are plentifully deve- 

 loped. 



The aperture is small, resembling that of a Lepralian 

 cell; and the oral valve occupies more than two thirds of its 

 area. 



Genus HUXLEYA, Dyster. 



Der. Named in honour of Prof. Huxley. 

 HUXLETA, Dyster, Quart. Journ. Micr. Sc. vi. (1858), 260. 



GENERIC CHARACTER. ZOARIUM corneous or subcalcare- 

 ous, dichotomously branched, the branches given off from 

 the top or side of a cell, and facing in the same direction. 

 ZOCECIA uniserial ; orifice small, subterminal, unarmed. 



I HAVE somewhat altered Oyster's generic character. 

 It represents the cells as biserial ; but Mr. Busk's figure 

 shows that this is not the case in any true sense. We have 

 no direct information respecting the mode in which the 

 zoarium is attached; but Mr. Busk represents tubular 

 processes as given off from the sides of two of the cells ; 

 and we may, I think, infer from their presence that 

 Huxleya, like Gemellaria and Brettia, is attached by 

 radiciform fibres and not by a creeping base. 



