'"'im'!''] PROCEEDINCJS OF THE NATIONAL MUSEUM. 401 



Genus CREPIDULA Lamarck. 

 87. Crepidula aculeata Gmel, 

 Beach sbclLs, rare. 



Indefatigable and Hood islands (Mas. No. 102361). Dr. Jones found 

 this form abundant on tlie mainland at Payta, Peru. 



Family AMALTHEID^E. 



Genii.s AMALTHEA Scliumaclier. 



88. Amalthea Gray anus Mke. 



::=Hip2}onyx Grayatms Mke. 

 Beach shells, common. 



Hood, Cliatham, and Indefatigable islands. Several specimens in 

 fair condition (Mus. Nos. 102358, 122108, 102464). 



89. Amalthea antiquatus Linn<5 

 = Hipponyx antiquuhus Liiiiif^. 



Beach, several examples. 



Indefatigable Island (Mus. No. 102465). Six rather small specimens 

 from Chatham Island in l)v. Jones's collection. AVimmer's list also in- 

 cludes it. 



90. Amalthea barbatus Stty. 

 = Hipponyx barhatus Sby. 



Common on the beaches. 



Chatham, James, Indefatigable, and Hood islands (Mus. Nos. 122109, 

 102460, 102357). Good, fresh examples were obtained at all of these 

 islands. Dr. Jones's collection includes it from Chatham Island. 



Family NATICID^. 



Genus POLYNICES Montfort. 



91. Polynices dubia Kecluz. 



= N. Atacamenxia Phil. 



Beach, one example. 

 Indefatigable Island (Mus. No. 102472). 



Tryon has included N. amicnlata Phil, and N. rapulum Reeve in the 

 synonymy of this species. 



92. Polynices uber Val. 



^= Mamma uberina Orb. 

 -\-M. rkilUpiana Nyst. 



Beach shells. 



Indefatigable, Hood, and Charles islands (Nos. 102471 and 102368). 

 M. uberina and ilf. PhiUipiana, of Wimm'er's list, are credited respect- 

 ively to Biudloe and Hood islands. 

 Proc. N. M. 93 26 



