GAMMARELLA. 181 



Polperro (Mr. Loughrin) ; Glamorgan ; Plymouth (Mr. 

 Bate). 



Gen. 81. EURYSTHEUS, Spence Bate. 



Eirst jaw-foot smaller than the second. Upper antenna 

 with secondary appendage. Telson cylindrical. 



Eurystheus tridentatus, Spence Bate. — Palm of second 

 jaw-foot convex, furnished with three obtuse teeth. 



Plymouth (Mr. Bate); Macduff (Mr. Gregor). 



Gen. 82. GAMMAKELLA, Spence Bate. 



Antennae like Gammarus, and upper with secondary ap- 

 pendage. Last pair of false legs with a single branch. 

 Telson single. 



Gammarella orchestiformjs, Spence Bate, — Upper 

 antenna longer than the lower; hand of first jaw-foot small, 

 hand of second very large and oval; caudal appendages 

 short. 



Polperro (Mr. Loughrin). 



