ITS AFFINITIES. 281 



poda, and perhaps also in the shortness of the 

 peduncle of the ultimate pair of pleopoda. 



Only one specimen of this species is in the 

 collection; and that was taken from a sponge 

 dredged in about ten fathoms of water in Esqui- 

 malt Harbour. It is of a brownish colour. 



AMPHITHOE PEREGKINA (DANA). Esquirnalt Harbour. 



Dana records this species as living amongst 

 the roots of floating fucus, at sea, thirty miles 

 south of Valparaiso. 



AMPHITHOE ORIENTALES (DANA). Egquimalt Harbour. 



It is also recorded by Dana from Tongatabu, 

 in the Pacific, along shores of coral in shallow 

 water. 



AMPHITHOE FILICOPtNIS (DANA). Esquimalt Harbour. 



It differs in no essential character from the 

 specimen to which Dana has given the specific 

 name, and which he obtained at Rio Janeiro. 



IDOTEA WOSSENESSKII (BKANDT). Esquimalt Harbour. 



Dana records it from San Francisco; it has 

 also been taken at Atcha and Sitka Sounds by 

 Wossenesskii, and at Puget's Sound by Dr. 

 Suckly. 



