ITS PRODUCTIONS. 71 



of Iridtea edulis and of Delesseria sanguinea grow in 

 the shallow but shaded pools near low water mark. 

 Among the creatures I brought home were several of 

 the Common Squat Lobster (Galathea rugosaj and 

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

 gosa, with its livery of scarlet and azure, Trochus 

 zizlphinus was common ; Cyprcea Enrojnea, common ; 

 Pec ten distort us, several ; Pec ten opercular is, small ; 

 A7iomi(C and Serpulce, common on stones; two or three 

 Botrylli; two oi ^\>Q^x\.\A.i\x\ Pleurohranchus ; Doris 

 tuherculata, D. JoJmstoni f?J, and another Z>om; 

 Ophiocoma rosnla, 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 1- ; 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 II.) 



Length w^hen crawling 1|- in. breadth J 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 



