HOLOTHURIA. 69 



covered with suckers void of evident arrangement. The surface was 

 entirely of a dingy white colour, with a few brown patches irregularly 

 interspersed. 



On the whole, this subject, excejjt in its proportions, bore consider- 

 able resemblance to the Holothuria fiisus. But, unable to identify it 

 either with that or with any of the rest which I have seen, I propose to 

 name it, provisionally, Holothuria Scotica, as mdicative, at least, of the 

 country of its nativity. — Plate XII. fig. 5. 



In two days the creature had expanded ten inches in length, by 

 about one where thickest, — the body being round, and tapering slightly 

 towards the extremities ; yet it did not adhere, though feebly discharg- 

 ing a stream from the posterior orifice. In nine days, however, some ot 

 the suckers were in adhesion, afterwards they were discovered to be in 

 five rows, as in other nine days the animal had established itself firmly 

 in its vessel. 



This is the usual course followed by all Holothuria?, on original re- 

 covery from the sea. 



The specimen seemed to be gaining strength along with the advance 

 of the season ; and it began to display some of the habits of the fmm\ 

 such as appeared from the curvatui'e of the body in its position, together 

 with greater elongation while the day declined. 



After having preserved this specimen half a year, under constant 

 observation, without protrusion of the tentacular organs, I concluded 

 that they had been lost l^efore it came into my possession. 



Nevertheless, the skin now growing purei', thinner, and more dia- 

 phanous, which was promoted by the specimen being kept continually 

 in the dark, symptoms of internal reproduction were exposed within. 



Near the anterior extremity, an internal darkish portion, much con- 

 ti'asting with the external whiteness, denoted progressive regeneration. 



It shewed that the animal had actually lost the arborescent appa- 

 ratus, with the appendages. 



During the season of redintegration, we have seen that almost com- 

 plete quiescence prevails. 



