EURYNOME ASPERA. 49 



possess, however, a pair of this beautiful Kttle 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 ]\Ian, and at seventy 

 fathoms in the iEgean. This evidently shows that the 

 genus belongs to deep water, an observation which holds 

 good of all the family of the Parthenoj)id<t. 



