MYSIS GRIFFITHSLE. 3 13 



to the end, fringed on both sides with long hairs ; outer 

 lamella broader and longer, fringed with long hairs on the 

 inner margin, and at the apex, and with a few short stiff 

 hairs only on the anterior third of the outer margin. 



Length three quarters of an inch. 



I can scarcely persuade myself that this can be the 

 species figured, but not described, by Guerin under the 

 name of M. rostratus, although the characters in many 

 respects agree with his figures. The form of the rostrum, 

 of the antennal scale, of the peduncles, of the eyes, of the 

 tail, and indeed of every part figured, although bearing a 

 general resemblance, differs so much in detail that we are 

 left in the dilemma either of considering the representa- 

 tions worthless from their inaccuracy, or of giving a distinct 

 specific name to ours. As no description exists of M. 

 Guerillas species, I have adopted the latter alternative, and 

 have named it in honour of a lady to whom natural history 

 is greatly indebted, and from whom I received the only 

 specimens of this species known. Mrs. Griffiths obtained 

 them at Torquay. 



