ITS PRODUCTIONS. 71 



of Iridcea edulis and of Delesseria scmguinea grow in 

 the shallow but shaded pools near low water mark. 

 Among the creatures I brought home were several of 

 the Common Squat Lobster f Galathea rugosaj and 

 a fine specimen of the much more beautiful Gal. siri- 

 gosa, with its livery of scarlet and azure. Trochus 

 ziziplii7}us was common.; Cyprcea Europ(Ea, common ; 

 Pecten distort us, several ; Pecten opercularis, small ; 

 AnomicR and Serpulce, common on stones; two or three 

 Botrylli; two of a beautiful Pleurohranchus ; Doris 

 tuherculata, D. Johnstoni f^J, and another Don's ; 

 Ophiocoma rostila, abundant, and in much variety ; 

 one had the body velvet-black ; — Polynoe cirrata ; 

 Actinia alba, and one or two other small species ; 

 Echinus esculent us '} ; a rough Sponge ; a small 

 Crab ; and a mass of eggs, probably of a crab. 



THE PLEUROBRANCHUS. 



The most interesting of these captures was the pair of 

 Pleurohranchi. The species proved to be P.plumu- 

 la, an animal very rarely seen by naturalists, and 

 a variety more than usually rich in colouring. It 

 therefore appeared to me worth while to make careful 

 drawings and notes from these individuals, which 

 lived for some time with me (See Plate 11.) 



Length when crawling If in. breadth f in. The 

 form oval, convex ; the cloak ample, smooth ; the 

 oral veil, undulate at front margin, the tentacular 

 sides produced into blunt angles, and the centre 

 notched. Dorsal tentacles blunt, curved outwards, 

 projecting a little beyond the veil. Eyes small, black 



