50 



HOLOTHUEIOIDEA. 



Body elongated, flattened behind, with the podia almost entirely 

 confined to the ventral surface. Integument very soft, body-wall 

 rather thick, deposits scarce. Dorsal surface papillose. The 

 deposits are perforated with four large holes. 



Colour— sometimes dark above, with yellow tentacles and lower 

 surface, but it may be of " all shades, from sienna to rose-colour and 



delicate pink." 



Remarkable for the large size of the Cuvierian organs, some of 

 the tubes of which may often be seen protruding from the anus ; 

 or a packet ready for expulsion may be seen in the cloaca. These 

 tubes are very extensile, and have great sticking powers. 



Distribution. Not certainly known except in the British area; 

 common off West Irish coasts. 



Royal Dublin Society. 

 Royal Dublin Society. 



a. Cleggan Bay, 4-9 fms. 



b. Donegal Bay, 30 fins. 



c. Kenmare River. 



d-i. Durgan, near Falmouth. 

 ;', k. Polperro, 20 fms. 



/. Coast of Cornwall. 

 m-o. Coast of Cornwall. 

 p. Plymouth. 



J. Snell, Esq. 



G. F. Tregelles, Esq. 



Holotkuria asper 



4. Holothuria asp era. 

 •a, Bell, Ann. $ May. iv. (1889) p. 445, pi. xviii. 



Spicules of Holothuria aspcra. X 220. 



This species is only known from a single specimen, which is re- 

 markable for its spicules ; they have, typically, a central cavity and 

 six projecting spokes. They are densely deposited in the skin, which 

 is peculiarly rough. Above the skin is wrinkled, below it is smooth ; 

 on each side there is a single row of not closely packed podia. 



Colour dirty grey. Length 77, greatest breadth 46 mm. 



a. S.W. coast of Ireland, 1000 fms. (Type.) 



' Flying Fox 



Exp. 



