DOTO. 587 



Body (two inches and more in length) linear-oblong, 

 narrow, steep-sided, rounded dorsally, very variously 

 coloured, but most usually of some shade of crimson, 

 variegated with madder brown, and speckled with opaque 

 white ; the painting often beautifully and curiously dis- 

 posed. Head-veil very short, its appendages long and 

 pinnated. Dorsal tentacles clavate, yellowish, in long 

 closely-fitting tapering sheaths, with ramified and radiating 

 marginal processes. Branchiae forming six or seven large 

 dendriform tufts on each side, decreasing towards the tail. 

 Foot very narrow, linear, rounded in front. 



This wonderfully beautiful sea-slug creeps upon corallines 

 in the laminarian and coralline zones, and is often taken 

 among sea-weeds between tide marks. It is found on most 

 parts of the British shores, but especially in the north. 



DOTO, Oken. 



Body elongated, subprismatic. Head covered by a 

 simple veil. Dorsal tentacula two, linear, retractile within 

 trumpet-shaped sheaths. Branchiae ovate or clavate, rough 

 with whorls of tubercles, deciduous, ranged in single file 

 along each margin of the back. Foot linear. Reproduc- 

 tive orifices and vent at right side. 



The animals of this genus are prismatic slugs, decorated 

 on each side with a row of muricated branchiae resembling 

 pineapples, or pine-cones, in miniature. They appear to 

 feed upon hydroid zoophytes. 



1. D. coRONATA, Gmelin. 



Plate A. A. A. fig. 4. 



Doris coronata, Gmelin, vol. i. p. 3105, No. 19. 



Melihcca coronata, Johnston, Ann. Nat. Hist. vol. i. p. 117, pi. 3, f. 5-8. 

 „ nrnata. Alder and Hancock, Ann. Nat. Hist. vol. ix. p. 34. 



