GAMMARELLA. 
181 
Polperro (Mr. Loughrin) ; Glamorgan ; Plymouth (Mr. 
Bate) . 
Gen. 81. EUEY STIIEU S, 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. GAMMARELLA, Spence Bate . 
Antennae like Gammarus , and upper with secondary ap- 
pendage. Last pair of false legs with a single branch. 
Telson single. 
Gammarella orchestiformis, 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). 
