270 



CHAPTER I. — continued. 



ANALYTICAL INDEX. 



Pound about the mouth of the Forth, . . page 82 



Usual colour different shades of brown or purple, . . ib. 



Found floating like balls of various shapes, ... 33 



Ampuda Poliana, ...... ib. 



Mr Merrilees of Lerwick, ..... ib. 



Plates I., II., III., IV., v., VI., VII., VIII., explained . 34 



§ 2. HoLOTHUBiA Fusus, — The Spindle Sea Cucuwher or Sweepwater, 35 



Specimen from the north-eastern part of the Forth, . . ib. 



Size, form, and peculiarities, . . . . 36 



After sunset shoots out eight luxuriant, arborescent tentacular organs, 37 



The tentacula seem a vegetable product, ... 39 

 The beautiful arborescent apparatus becomes a wide shallow, funnel 



at night, ....... ib. 



On the slightest shock, or intrusion of light, the whole apparatus is 



quickly withdrawn, . . . . .40 



The Tentacula distended by a fluid, ... ib. 

 Use of the tentacula uncertain — probably designed for an alimen- 

 tary purpose, . . . . . . 41 



The intestine always full of a soft brown or yellowish matter, . 42 

 Quantity of animal matter in a Holothuria equivalent to what is in 



a rat or weasel, . .- . , . .43 



Delle Chiaie, ...... 44 



Food of the Holothuria still problematical, . . . ib. 



Body covered by flexile, extensile papillae — not with a tube, 46 

 When quiescent, the skin resembles shagreen ; prolonged, the body 



is invested by a woollen-like coat, ... ib. 

 The suckers overspread the whole skin — when disengaged each has 



an independent action, .... ib. 



Advances head foremost — the fore and hind suckers alternately re- 

 laxing, ...... 47 



Of nocturnal habits, . . . . . .48 



Holothuria pencillus must be expunged from the Systema Naturce, 49 



After entix-e mutilation new tentacula produced, . . 61 



Propagation, ...... ib. 



None of the spawn proved fertile, . . . .54 



The whole organic mass separated from the body, death in consequence, 55 

 Such mutilation ascribed to accidental causes, . . .56 

 Holothuria fusus found about Orkney and Shetland, and the estuary 



of the Forth, ...... 57 



Professor Goodsir, ..... ib. 



Species of the Holothuria multiplied beyond the truth, . . 58 



Of various colours, ...... ib. 



