260 GAMMARTD.E. 



length; the superior pair have the infero-distal extre- 

 mity of the peduncle furnished with an obtuse tooth, 

 and all the articuli of the flagellum are inferiorly and 

 anteriorly enlarged, and support a short auditory cilium, 

 as well as a hair or two ; the inferior pair are scarcely 

 as long as the superior. The arms are nearly of the 

 same size, having the hands tolerably large, and forming, 

 with their respective wrists, a tolerably perfect oval ; 

 the palms are oblique, but not defined ; the fingers im- 

 pinge closely against the palms throughout their entire 

 length when shut. The walking feet are all of a uni- 

 form length, and the fingers are slightly curved and 

 strong. The terminal caudal plate is subacutely lanceo- 

 late. 



Under the microscope the integument of the ani- 

 mal is seen to be covered 

 by minute scale-like ele- 

 vated processes, as shown 

 in the annexed cut. 



The type of this species, 

 which was found on the Devonshire coast, has long been 

 in the British Museum, where it has been preserved 

 under the MS. name of Calliope, given to it by Dr. Leach, 

 without any specific name. But Kroyer, in his work on 

 the Amphipoda of Greenland, has described and figured 

 it under the specific name which we have adopted. 



We have received specimens from the Moray Frith, 

 through the kindness of Mr. Edward and the Rev. Geo. 

 Gordon, as well as from Tenby, where it was dredged 

 by Mr. Webster. 



