50 A MANUAL 



3. The French'ivhite Thick-skinned. 

 Disc white, streaked with red and orange. Ten- 

 tacles dove-colour, ringed with white and red. 



3. White -tentaclecl Thick-skinned. 



Disc crimson-lake, shaded into purple. Tentacles 

 white, with rings of bright crimson surrounding those 

 of the first row. 



The naturalist may amuse himself by adding 

 endlessl}^ to this list. 



The average diameter of the contracted body of 

 this species is 1 J inch, and of its expanded bloom 

 from 3 to 4 inches. 



In our third pan, which contains the last group, 

 we find that all the specimens agree in having 

 minute flattened perforated warts on the upper sur- 

 face of their bodies, and that they send out from 

 invisible pores their ciliary white "threads" con- 

 taining " spike-cases." 



The first specimen which we examine has a cup- 

 shaped body, that is, the disc is two or three times 

 larger in diameter than the stem, when the latter is 

 at all elongated. Generally, however, this species 

 may be recognised by the extreme flatness of the 

 disc, and by the vast number of small tentacles 

 which are crowded together, and lie more or less 

 horizontally upon the disc's outer edge. The body 



