DORIS. 83 



A. GUIs united at the base and retractile within a cavitij : 

 odoiitophore broad, with numerous spines. (Doris proj^er.) 



1. Doris tubercula'ta^ Cuvier. 



D. tuherculata, Cuv. in Ann. du Mus. v. p. 469, pi. 74. f. 21; A. & H. 

 Brit. Nud. Moll. fam. 1, pi. 3. 



BoDr elliptical, subdepresscd, orange or yellow, sometimes 

 nearly white, usually blotched with brown or olive : mantle 

 thickly covered with moderate-sized, unequal, flattish tuber- 

 cles : dorsal tentacles conical ; oral tentacles tubercular : gills 

 or branchial plumes 9, tripinnate, recurved, large and spread- 

 ing, forming a circle slightly open behind, transparent white, 

 tipped with violet. L. 2-3. 



Habitat : Under stones and in crevices of rocks within tide- 

 marks ; common on all parts of the British coast. Its range 

 of depth does not extend much beyond low-water mark. 



This is the largest of our British Dorides : specimens have 

 been found reaching 4, or sometimes 5, inches in length ; but 

 these are extremely rare. It is a very sluggish animal. 

 [Sometimes used in Shetland as a bait for rock-cod. The 

 fishermen there call it ''peer."] The spawn may often be 

 seen in rock-pools in the spring and early summer, forming a 

 conspicuous convoluted cup, of a buffcolour, with slightly 

 waved margins. 



i>. tubercidata is found on the northern and western coasts 

 of France, and is recorded as occurring on the Swedish and 

 jSTorwegian coasts as well as in the Mediterranean ; but as 

 more than one species have been described under this name by 

 continental authors, the latter habitat at least requires con- 

 firmation. [Heligoland (Frey and Leuckart).] 



This is the D. argo of Pennant, Fleming, and several of our 

 earlier writers. The true D, argo is a Mediterranean species. 



2. D. flam'xMea, Alder and Hancock. 



A. & H. in Ann. N. H. xiv. p. 330; and Brit. ] 

 .4. 



Body ovate or elliptical, scarlet, rarely with slight blotches 



D. flammca, A. & H. in Ann. N. H. xiv. p. 330; and Brit. Nud. Mo! 

 fam. 1, pi. 4. 



