52 GONIODORIDIN.E. 



suniptuosa, Gould. venosa, Quoy and Gaim. 



tenera, Costa. vermicelli, Gould. 



testudinaria, Risso. violacea, Quoy and Gaim. 



tomentosa, Cuv. Zetlandica, Alder and Hanc. 

 ulidiana, Thomp. 



Genus CERATODOR1S, Gray. 



Tentacles elongate, filiform, not retractile. Mantle covered 

 with elevated processes ; gills retractile within a common 

 cavity. 



Ex. C. eolida, Quoy and Gaimard, pi. 62, fig. G. 



The tentacles in this genus appear to be slender, non- 

 retractile, and serrated on the hinder margin; the branchial 

 plume forms a star-like disk, the rays of which are simply 

 pinnate, and the back of the mantle is covered with slender, 

 subulate, elevated processes. 



Sub-fain. GONIODOKIDIKE. 



Body angular; mantle distinct, simple, not covering 

 entirely the head and foot. 



Genus DORIPRISMATICA, D'Orbigny. 



Tentacles dorsal, clavate, laminated, not retractile or 

 invested with sheaths. Gills lanceolate, pinnate. 



Syn. Goniodoris, Forbes. 



Ex. D. Whitei, Adams and Reeve, pi. 02, fig. 7. 



Except in the position of the tentacles there does not 

 appear to be any great difference between this genus and the 

 Brachychlanis of Ehrenberg. The species are usually 

 adorned with the most vivid colours, disposed in red, blue, 

 and yellow lines, bands, and blotches. Found between 

 tide-marks in European and tropical seas. 



