506 APPENDIX. 
third and fourth pair having the basis round, and the dactylos 
short, curved, and posteriorly directed; fifth pair having the 
basis long and narrow, and the propodos and dactylos almost 
rudimentary : posterior pair of pleopoda long, with two sub- 
equal rami, ciliated, on the inferior margin; telson two-lobed. 
This species was first taken off the coast of Norway, in 
1854. It has since been taken in England, off Tynemouth, 
off the Holy Island, and in the Shetlands, by the Rev. A. M. 
Norman. 
