CALOCARIS MACANDRE^E. 235 



anterior hands of some crustacean which was wholly un- 

 known to me, and unlike every other form I had ever 

 seen. The only note which I found appended to them 

 intimated that they had been taken from the stomach of a 

 flat-fish, a ground feeder therefore, and in deep water. In 

 the course of last year (1 845) I received from my friend 

 Mr. M c An drew, amongst some other Crustacea dredged 

 by him in Loch Fyne and the Mull of Galloway, speci- 

 mens of the present species, an examination of which 

 at once shewed me that the claws obtained by Mr. 

 Thompson belonged to the same animal. Mr. M c Andrew 

 and Professor Forbes have since again obtained it, and 

 have completely established the remarkable fact, that it 

 occasionally inhabits a depth of no less than one hundred 

 and eighty fathoms, in which situation it is fossorial in 

 sandy mud. Now it is clear that at such a depth, and 

 of fossorial habits too, distinct vision would be useless and 

 unavailing ; and this at once accounts for the rudimentary 

 character of the eyes, which are entirely white, and 

 exhibit the appearance shewn in the vignette. 



I have named it after my friend Mr. M c Andrew, who 

 first obtained it, and who has made so many important 

 additions to our British Marine Fauna. 



EVES OF CALOCAUIS. 



