278 GAMMA R1DJE. 



a few short spines. The central caudal-plate is long, 

 narrow, and lanceolate. 



The specimen from which our description and figure 

 are taken was captured by Mr. Gosse, at Ilfracombe, and 

 kindly sent to us. At first we took it for a young 

 animal belonging to the genus Microdeutopus ; but 

 closer examination having convinced us of the dis- 

 tinction, we have named the animal specifically after the 

 genus it so much resembles. 



We have recently received other specimens of this 

 species from the Shetlands, where they were taken by 

 the Rev. Mr. Norman. 



