Part first. 



5. Sea-cucumbers , slug-shaped bodies , covered with pointed 

 suckers. The delicate brown, feathery undergrowth will 

 be seen to be the tentacles of numerous sea-cucumbers 

 {Ciicumaria, fig. 9), adhering to the rocks; each has ten 

 tentacles round its mouth, in crawling they are retracted; 

 in the larger species {HolotJmna, fig. 10) which is black , 

 they are not obvious; Stlchopus (fig. 11) is reddish, a foot 

 long, and flat. 



Fig. 9. Ciicumaria Planci, 

 on a stone, with out- 

 stretched tentacles, 

 '/;j nat. size. p. Bo. 





'j^gfc^w-^^ 



<'i"^ : ^ . - _ 



Fig. 10. Holothuria tnhidosa, 

 ^/j nat. size. p. 65. 



i^ Fig. U. Stichopus regalis, 



'/j nat. size. p. ()(>. 



The starfishes , sea-urchins and sea-cucumbers adhere to 

 the glass or rock by numerous suckers, witli which they crawl 

 (for details v. p. G4) , t'he brittle-stars move by wriggling , 

 the feather-stars can swim. 



