280 ZOOPHYTOLOGY. 



In the ' Belfast Dredging Com. Report } for 1858, I have 

 recorded this species as Avenella dilatata. But the Avenella 

 of Sir John Dalyell is a very doubtful genus, and I prefer, 

 for the present, to refer it to Farrella, as denned by Mr. 

 Busk, in the ' Micr. Journal/ vol. iv, p. 93. 



II. Catalogue of the Polyzoa collected by J. Y. Johnson, 

 Esq., at Madeira, in the years 1859 and 1860, with 

 descriptions of the New Species. By G. Busk, F.R.S. 



I. Cheilostomata. 

 Fam. 1. Catenicellid.*;. 

 Geu. 1. Catenicella, Blainv. 

 1. C. elegans, Bk. 



Hub. — Madeira, on fishermen's baskets, abundant, /. Y. J. ; (?) Medi- 

 terranean, Savigny ; South Africa ; Australia ; New Zealand. 



Fam. 2. Salicornaiiiidj2, Bk. 

 Gen. 2. Salicomaria, Cuv. 

 1. S. Johnsoni, Bk. 

 Hub.— Madeira, /. Y. J. ; Shetland, Barlee. 



Fam. 3. Cellulakiid.e, Bk. 

 Gen. 3. Scrupocellaria, Van Beneden. 

 1. S. Maderensis, n. sp. 

 Cellnlis elongatis : avicidaiio parvo ; orificio ovall, per isf ornate simplici 

 glubro ; operculo suborliculari glabra integro ; spinis marginalibus sex, 

 equidistantibus ; ovicelluld glabra non punctata. 



Cells elongated ; avicularium small ; orifice oval, peristome simple, not 

 granular; pedunculate operculum sub-orbicular, smooth, entire; six equi- 

 distant marginal spines above ; ovicell smooth, not perforated. 

 Hah— Madeira, J. Y. J. 



This species differs from 8. pilosa, Audouin (sp.), in several 

 respects. 1st. In the form of the cell, which in that species 

 is represented as elongated, and of nearly equal diameter 

 throughout, especially as viewed on the dorsal aspect. 2dly. 

 In the disposition of the marginal spines, which in 8. pilosa 

 arc depicted as four on the upper and outer margin, and a 

 single one some distance apart on the inner border of the 

 orifice. 3dly. In the ovicell, which in S. pilosa appears to 

 be perforated. They agree somewhat in general aspect, in 



