^'"isu^'] PROCEEDINGS OF THE NATIONAL MUSEUM. 429 



88. Succinea Wolfi Keib. 

 Chatham Island, Keibisch. 



var. producla Reib. 



Chathaui ishiiid, Keibi.sch. 



Superrttinily DlTTiKM: A.T.A.. 



Family ONCniDIID.^. 



Genus ONCHIDIUM Cuvit;r. 

 89. Onchidium Leslie! Stearns. 

 (Plate I.I, Figs. 2,3.) 

 Albemarle and Charles islands. Albatross. 



Genus ONCHIDELLA fJiay. 

 90. Onchidella Steindachneri Semper. 

 (Plate LI, Figs. 4,5.) 



Charles and Albemarle islands. Albatross. 



Suborder BASOMMATOPHORA. 

 SupeifaiTiily .A-KTEOPKILA. 



Family AURICULID.E. 



Genus AURICULA Lamarck. 



91. Auricula stagnale Petit. 



= Ellohium stagnale Petit. 



Bindloe Island, Wimmer. " 



Genus TRALIA Gray. 

 Tralia panamensis G. B. Adams. 

 Hood and Charles islands, Wimmer, 



Subfamily MEL AMPINS. 



Genus PEDIPES Adanson. 

 93. Pedipes angulatus C. B. Adams. 

 Bindloe Island, Wimmer. 



Genus MELAMPUS Montfort. 

 94. Melampus trilineatus C.B.Adams. 

 Hood Island, Wimmer. 



SuperfiiiTiily PETROPHII^A.. 



Family SIPHOKARIID^. 



Genns SIPHONARIA Sowerby. 



95. Siphonaria gigas Sby, 



Galapagos Islands, Carpenter, 



