MONTAGUxV ALDERI. 63 



which are evidently of service in assisting the animal in 

 securely grasping the weed, or stalks of zoophytes, as it 

 rambles through its submarine gardens. The fingers are 

 short and sharj). The caudal appendages do not appear 

 to differ materially from those of the preceding species. 



This animal, when alive, is straw-coloured, striped with 

 bands of rose, one occurring in each segment through the 

 body; these are continued down the sides of the animal, 

 but grow fainter and less persistent towards the posterior 

 extremity of the animal. 



The first specimen was sent to us by Mr. Joshua Alder 

 (in compliment to whom the species is named), and 

 was taken by him on the coast of Northumberland, 

 off Cullercoats ; whence we have also received it from 

 the Rev. A. Merle Norman. This spot having been 

 rendered classic to naturalists as the field of the re- 

 searches of various eminent observers, we append a 

 vignette of it from the pencil of Mr. Alder himself. 



