526 APPENDIX, 
when they would again repeat their voluntary evolutions. 
They did not, however, always rise to the surface. 'The 
journey was sometimes performed about midwater. They 
are, when alive, a most beautiful coloured species, variegated 
not unlike Urothoé elegans, and rivalling that animal in bright- 
ness of tints. I took one, however, that was all over a most 
brilliant red. I have been told that this species has never 
been found outside the Medusa. However this may be, all 
mine were. And what appears to be more extraordinary is, 
that, comparatively speaking, we have had no Medusz here 
this season (1865). During the months of July, August, and 
September I have seen them, generally, by hundreds and 
thousands. All that I have this year observed have been 
three.” Mr. Edward also informs us that he has seen speci- 
mens of these crustaceans thrown on the shore in extraordinary 
large quantities. After a storm one night, he saw them form- 
ing a band an inch and a half broad to an inch and a half 
deep, for thirty yards along the beach. 
