Example, N. bursaria. Locality, European seas, &c.
This is the Sertularia buraaria of Linnaeus, Cellularia burtaria of Pallas, Dynamena bursaries of Lamoureux.
To the name family belong Gemellaria (Savigny), Diclumia (Busk), Dimetopia (Busk).
14. Scruparia. Cells uniserial ; junctions rigid, or of the same consistence as the cella ; polyzoary adnate or erect.
Example, S. chelata, Ellis and Linn.; Cellularia chelata, ; Eucratea chelata, Lamouroux ; E. loricata, Fleming. Locality, European seas.
In the same family are included Nippothoa (Lamoureux); "Etta (Lamouroux); Beania (Johnst.).
Lamoureux broke up this generic division into the genera Eucratea and Wow. De Blainville says that Unicellaria, under which he includes Scruparia, is easily characterised by the solitary disposition of its cellules, and that he had examined both Eucratea and Lafoea in Lamouroux'a collection at Caen, and found the differences of too little value to warrant the separation.
15. Catenicella, De Blainville ; Catenaria, Savigny. Animals unknown ; contained iu calcareous cells arising one from the upper and back part of another by a short corneous tube, all facing the Same way and forming dichotomously divided branches of an erect, phytoid, polyzoary cell, at each bifurcation geminate.
16. Alenipea. Cells oblong, or attenuated downwards, imperforate behind, with a sessile avicularium, frequently absent on the upper and outer angle, and one or two sessile avicularia on the front of the cell below the aperture.
Synonyms. Ccllarta (part), Linnaeus, Solruider.
Crisia (part), Lamouroux.
Tricellaria, Fleming, De Blainville, Gray.
The essential distinctive character of this genus, as here intended, consists in the presence of one or more sessile avicularia on the front of the cell below the aperture, and usually of a sessile avicularium at the upper and outer angle ; no vibraculum. With the exception of one or perhaps two species the Nenipea have three or six cells only in each internale ; the branches consequently are loose and straggling, and usually incurved at the extremities, as is best seen in 31. cirrata.
of that described by Snviguy, which might have been procured in the Red Sea, appear to be limited to the Southern Ilemisphere.
no hyaliro, of which a figure is here given from Lamonroux, appears to be referriblo to this genus.
The genus appears to enjoy a wide geographical range, occurring from the Arctic Circle to the southern points of America and Africa.
This genus (of which seventeen species are describe(' and figured in the Cat. Brit. 5Ius.') admits of division into three subgenerie groups. Tho specie; are for the most part Australian, and with the exception For the beat account of the species of this and other families of the Poly:oa the reader is referred to Mr. Bush's complete and beauti fully illustrated Catalogue of the Marine Polyzoa' in the collection of the British Museum. [Potvzos.]