ECHINODERMATA. 97 



in most of Its characters, especially in tlie total absence of 

 skin-siiicules, and in the form of the tentacular spicula, whicli 

 are elongated and cribrose. It appears to differ from G.fron- 

 dosa in its very thick test, and especially in appearing to have 

 feet scattered over the body between the regular rows. At 

 the same time it is possible that the firmness may be due to 

 a state of rigid contraction from having been beaten about in 

 a storm when alive ; and with respect to the latter, the pores 



may not mark contracted feet It does not correspond badly 



with the description of C. Drummondi, a species unknown to 



T) 



me 



Cucumaria ehngata, Diiben & Koren ; Norman, Zetlandic 

 Fauna, Kep. Brit. Assoc. 1868, p. 316. 



= Cucumaria pentactes, Forbes (partim), the centime figure in woodcut 

 p. 21^. 



Specimens are occasionally brought from tlie coralline 

 ground by the fishermen. 



Cucumaria Hyndmanni, Thompson ; Forbes, Brit. Starf. 

 p. 225. 



Not uncommon in the stomaclis of haddocks and cod. 



Cucumaria lactea, Forbes & Goodsir ; Forbes, Brit. Starf. 

 p. 231. 



[Plate IV. fig. 5, and Plate IX. fig. 5.] 



Abundant in the coralline region amongst zoophytes. 

 Young specimens are numerous in June. 



Genus Thtone, Oken. 

 Thyonefusus, 0. F. Miiller ; Forbes, Brit. Starf. ji. 233. 

 Common in the stomachs of cod and haddock. 



Genus Thyonidium, Dub. & Koren. 

 Thyonidium Duheni, Norman, o^). cit. p. 317. 

 Occasionally in the stomachs of the cod and haddock. Mr. 

 Norman states that he has found it on the coast of Ireland as 







