BRITISH NUDIBRANCHIATE MOLLUSCA. 



SYNOPSIS. 



Sub-Kingdom. Mollusca. 



Class. Gasteropoda. 

 Order. Nudibbanchiata. 



Fam. 1, DoBiDiDiE. Branchial plumes surrounding the vent on the medio-dorsal line. 

 Sub-Family, Doridince. With a cloak. 



Gen. 1. Doris, Linnaeus. Tentacles clavate or conical, retractile within cavities, sometimes slightly 

 sheathed : cloak large, covering the head and foot ; without appendages. 



*Body depressed : plumes retractile within a single cavity. 



D. tuberculata, Cuv. 



D. flammea, A. & H. 



D. Johnstoni, A. & H. (D. obvelata, Johns.) 



D. coccinea, For. 



D. repanda, A. & H. 



D. mera, A. & H. 



**Body depressed : plumes retractile within separate cavities. 

 D. Ulidiana, Thomp. 

 D. muricata, Mull. 

 D. aspera, A. & H. 

 D. bilamellata, Linn. 

 D. affinis, Thomp. 

 D. depressa, A. & H. 



***PJody convex : plumes non-retractile. 

 D. pilosa, Mull. 

 D. similis, A. & H. 

 D. lsevis, Mull. 

 D. sublsevis, Thomp. 



Gen. 2. Goniodoris, Forbes. Tentacles clavate, non-retractile, without sheaths : cloak small, exposing 



the head and foot : without appendages. 



Gr. nodosa, Mont. 



vars. Gr. Barvicensis, Johns. 

 Gr. marginata, Mont. 

 G. emarginata, For. 

 G. elongata, Thomp. 



