GONIODORIS. 81 



HABITAT : South coast of England ; rare (Montagu). 

 This species is only known through Montagu's description 

 and figure. 



Genus VIII. GONIODO'RIS [*], Forbes. 



BODY elongate or squarish : mantle rather small and short, 

 having a waved or scalloped margin, without appendages, 

 exposing the head and foot : dorsal tentacles laminated, non- 

 retractile : oral tentacles flattened and angular : gills plumose, 

 surrounding the vent on the medio-dorsal line, non-retractile : 

 odontophore narrow : there is a spinous buccal collar. 



This genus, as now restricted, contains very few species ; 

 the two here described are the only ones known as European. 

 Two others have been found in the Indian Seas. 



1. GONIODORIS NODO'SA, Montagu. 



Doris nodosa, Mont, in Linn. Trans, ix. p. 107, pi. 7. f. 2. G. nodosu, 

 A. & H. Brit. Nud. Moll. fam. 1, pi. 18. 



BODY limaciform, subangulated, tapering a little posteriorly, 

 transparent white, tinged with yellow or pink, with opaque- 

 white spots : mantle with a scalloped margin, reflected up- 

 wards, and a keel down the back, on each side of which are 

 one or two rows of prominent tubercles : dorsal tentacles cla- 

 vate, yellowish : oral tentacles flattened, and produced into 

 blunt points : gills 13, simply pinnate, non -retractile. L. 1. 



HABITAT : Xot uncommon between tide-marks on most of 

 our rocky shores, especially in the months of May and June, 

 at which time it is spawning. Professor Loven records it as 

 Swedish ; but we have no account of it as yet from other 

 foreign localities, though it will probably be found on the 

 neighbouring coasts of France and Holland. The species is 

 rather variable. Varieties of it have been named Doris Barvi- 

 censis by Johnston, G. emaryinata by Forbes, and G. elongata 

 by Thompson. 



[ * An angulated Doris.] 



E5 



