128 Dr. J. C. Mel V ill and Mr. E. Stantlen on 



Suborder A K C A C E A. 



Fam. Arcadse. 



Limopsis hardlngiiy sp. n. (PI. VII. figs. 2, 2 a.) 



L. testa crassiuscula, albida, nitida, obliquante, superficie undique 

 concentrice irregulariter striata, versus marginem ventralem 

 longitudinaliter radiatim multistrigata, aliter Isevi, umbonilius 

 parvis, aciiminatis, pagina iutus alba, laevi, margine-simpliciter 

 planato, cardine regulari, dentibus ad 10 utrinque iustructis, 

 linea palliali baud siimosa. 



Alt. 26, lat. 2S, diam. 9 mm. 



Roy Cove. 



Compared with the known species of the genus, this conios, 

 perhaps, nearest to L. pelagica, Smith, than which it is far 

 less oblique, larger, and more substantial. L. grandls and 

 marionensis, both also of Smith and from southern latitudes, 

 are comparable in a lesser degree. Our only example was 

 found denuded of its periostracum. We have been requested 

 by i\Ir. Vallentin to associate with this fine Limopsis, of 

 which we hope better examples will some day be brought to 

 light, tlie name of j\Ir. \\ . H. Harding, Colonial Manager of 

 the L'alkland Isles Com|)any, who has rendered much service 

 in local biological investigation. 



Subfam. PniLOBnYiNjE. 

 Philohrya sp. 



Roy Cove. 



Immature, and only serving to demonstrate the presence 

 of lliis genus in the W. Fulklands. 



Suborder i\I Y T r L A c E A. 



Fam. Mytilidse. 



I\fi/tilus hifurcatus, Conr. 



Mijtilus hifurcatus, Conrad, Journ. Amer. Nat. Sci. Pliil. v. 7, pi. ccxli. 



Roy Cove. 



Myhlus eduh's, L. 



Mj/tUm ednh's, Limi6, Syst. Nat. xii. ed. p. 1157 (17fif>) ; Forbes & 

 Jliiiilfy, ii. p. 170, pi. xlviii. figs. 1-4; .roHrevs, Tli.'it. Coiicli. ii. 

 p. 101 (1803); Suiitli, i'liil. Tran.s. Koynl Soc. Load, clxviii. p. 18y 

 ^1879). 



Common, and, as in case of Anomiacphipphun^ found both 

 in the north and south polar an-as. 



