UAMMAlUD.i;. 1 1 7 



margin. Fourth anil fifth pairs nearly iinifuiin ; basos having the 

 postoi'ior margin roundc-d, iin])t'i-fLH'tly crennlati'd; daetylos straiglil , 

 stylil'onu. Ante- and penultimate pairs ol' pleopoda having both 

 tho ba^e and the rami longer than in U. marinus : ultimate pair 

 not reaching much beyond the antepenultimate ; rami lanceolate, 

 naked. Telson long, obtuse, naked. 

 Length scarcely /yths of an inch. 



Hab. Tenby (Mr. W. Webster). 



4. Urothoe elegans. (Plate XX. fig. 2.) E.M. 



Urothoe elegans, Spence Bate, Si/napsis, 4'c., Ann. Nat. Hist. Feb. 1857. 

 Ganmiarus elegans, Spence Bate, Brit, Assoc. Btport, 1855. 



Ccphalon not produced beyond the base of the superior antennas. 

 Eyes nearly horizontal, long ovate. Superior antenme having 

 the fij>>t joint of the peduncle broader than, and subequal iu 

 length to, the others ; flagellum about half as long as the pe- 

 duncle, four-jointed; secondary appendage two-jointed. Inferior 

 antenna) ha'S'ing the peduncle nearly as long as the peduncle of the 

 superior; flagellum slight, nearly as long as the animal. Gna- 

 thopoda subequal, slender ; carpi longer than the propoda ; palmar 

 oblique, imperfectly defined, ciHated. First and second pairs 

 of pereiopoda subequal; propoda slightly dilated at the distal 

 extremity, ciliated ; dactyla straight, sharp, styliform. Third 

 pair of pereiopoda having tho bases quadi-ate ; daetylos long, 

 straight, sharp, styhform. Fourth pah' longer than the third; 

 bases oval; daetylos long, straight, sharp, styliform. Fifth pair 

 having the bases oval ; daetylos long, shai-p, straight ; a few long 

 plumose cUia mixed vnth short simple ones occur upon the poste- 

 rior margins of the cai-pus and propodos. Ante- and penultimate 

 pairs of pleopoda short ; rami verj- short, shorter than their respect- 

 ive bases, subequal : ultimate pair long ; rami longer than base, 

 plumosely ciliated. 

 Length -^ths of an inch. 



Hab. PljTuouth ; found among trawl refuse (C. ;{?. 5.). 



This species appears to be so much like U. irrostratus, that, had not 

 their respective habitats been so distant, I should have been inclined 

 to have united them. I have observed a close appi-oximation, in 

 the forms of the Amphipods found on the coasts of Western Eiu-ope, 

 to those on the coasts of the Australasian Islands. 



5. Urothoe irrostratus. (Plate XX. fig. 3.) 

 Urothoe inostratus, Dana, U. S. Explor. Exptd. p. 022. pi. Vd. f. o. 

 •' Near U. rostrafus. Cephalon not rostrate. Flagellum of the 



