EURYNOME ASPERA. 



49 



possess, however, a pair of this beautiful little species from 

 the Bay of Naples, and find it to be very distinct from ours 

 in several points, yet bearing a near affinity to it. As a 

 sufficient distinctive character of it has not yet been given, 

 for that of Risso is altogether useless, I thought it desirable 

 to notice it on the present occasion. It differs from the 

 English species by its longer rostrum, which equals one- 

 third of the total length, and by the absence of the scat- 

 tered tubercles by which that is distinguished, instead of 

 which there are several broad, flat, shield-like elevations. 

 Risso had not seen the female, of which sex I have a 

 specimen loaded with eggs of a deep amber colour. 



My friend Professor Forbes dredged Eu. aspera at a 

 depth of thirty fathoms off the Isle of Man, and at seventy 

 fathoms in the JEgean. This evidently shows that the 

 genus belongs to deep water, an observation which holds 

 good of all the family of the Parthenopida. 



E 



