486 Dr. Johnston's Contributions to the British Fauna. 



^hich have oaly a single series of plates, from Caryophyllia, which may be 

 characterized thus: 



Caryophyllia. 



Char. Gen. 



Polyparium simplex, basi aflSxum. Corona laminis duplici serie dispositis, 

 exterioribus majoribus, regulariter insequalibus, maximis inter seriei internse 

 laminas interpositis. Discus lamellis erectis, prominulis, foliatia. 

 Type. Car. Cyathus- 



The genus Caryopliyllia thus modified contains two recent species*, Car. 

 CyaiAws, and the species, the habits of which form the subject of this interest- 

 ing memoir, and which, in justice to the memory of the much regretted natu- 

 ralist who first characterized the soft parts, it is proposed to name 



Caryophyllia Smithii. n. s. 



Car. laminis sub-integris, plicatis, marginibus leviter crenulatis ; laminis exte- 

 rioribus valde inaqualibus, laminis minoribus iribus inter altiores interpositis. 



Tab. XIII. f. 1 — 6. Mus. Stokes, De la Beche. 



Obs. The plates of the inner series in Car. Smithii are thinner and broader 

 than those of the same series in Car. Cyathus. 



On looking down with a magnifying glass upon the lamellae which form the 

 papillae in the centre or disc of Caryophyllia, indications of a spiral structure 

 were perceived. This induced Mr. Stokes to make a longitudinal fracture of a 

 specimen of Car. Cyathus in my presence, when the screw-shaped roots of these 

 lamellae were seen running up the centre of the coral parallel to each other. 



* It will probably include also^the Car. Europea and Car. pygmeea, Risso, 

 (Hist. Nat. de I'Europe Merid. ;) but the double series of lamellae is not no- 

 ticed, and the figure of the former is not sufficiently defined to decide the point. 



W. J. Broderip. 



Art. L. Contributions to the British Fauna. By George 

 Johnston, M.D., Fellow of the Royal College of 

 Surgeons of Edinburgh. 



Class. Annemdes. Lamarck. 

 Fam. Nereidees. Id. 

 Gen. Spio. Id. 



1. Sp. viridis. 

 Desc. Body three or four inches long, as thick as a goose 

 quill, subquadrangular, tapered a little towards both ends, of an 

 uniform dull grass-green colour, or brownish towards the tail. 



