182 JULY. 



investment of muscle, which completely enclosed both 

 the wart and the base of the spine, having one insertion 

 in the unpolished wart, and the other in a remarkable 

 ring or shoulder of the spine, visible just above the 

 socket. 



These are but two or three salient points of interest 

 in the structure of this little unvalued, disregarded 

 creature. I could relate much more ; indeed, I think 

 it would not be difficult to write a bulky volume of the 

 history and biography of a single Sea-Urchin, of which 

 every page would display the glory of God. But I have 

 not space for that here. 



We sometimes, but very rarely, find on this coast a 

 very lovely form of this class of animals, the Rosy 

 Feather- star. 1 It consists of ten long attenuated arms, 

 radiating from a common centre, composed each of about 

 forty slender joints of stone, and each joint carrying a 

 pair of diverging beards, also many -jointed, all of which 

 together, by their number and arrangement, give to the 

 arm the aspect of a beautiful feather. Around the 

 central point of radiation, a small cup -like body gives 

 origin to the arms, which are double, a pair springing 

 from a single basal joint. Within the cup the soft parts 

 of the animal are chiefly located, the organs of the vital 



1 Ccmatuln rosacea ; a fine specimen of which, taken by myself in a little 

 cove near Torquay, I have delineated in the centre of Plate XX. 



