f 
The Voyage of H.M.S.“Challengerr 
Amphipoda Hypenna, PL CLXXXIV. 
Pons. 
T R.R. Ste^bin^, del . 
J.TReruncBcid, lith Edsu*" 
TETRATHYRUS M 0 IN C CE U R I , 
n. sp. 
