EISCLADUS LONGICAUDATUS. 413 



as the flagellum is strongly setose along the under surface. 

 The second pair of hands are a little larger than the first, 

 of an oval form, with the palm deeply excavated and 

 slightly ciliated. The walking legs are nearly equal in 

 length. The ultimate pair of caudal appendages have 

 the peduncle robust, and as long again as the middle 

 tail-piece ; the branches are very unequal, the inner 

 being rudimentary, and the outer longer than the ped- 

 uncle, and terminating in a small second joint, re- 

 sembling a short stout spine. The central tail plate is 

 lanceolate. 



This species forms a curious link between the genera 

 Amphithoe and Melita ; in fact, it is only separated from 

 the nest-building group by the form of the caudal ap- 

 pendages. 



It was dredged during the last summer for the first 

 time by the Rev. A. M. Norman and Mr. Gwyn Jeffreys, 

 in Outer Skerries Harbour, Shetland, in from two to 

 five fathoms of water. 



