388 MOLLUSKS OF THE GALAPAGOS 8TEARNS. 



Ilia, seem to be of rare occurrence in the Galapagos Islands. Carpen- 

 ter reports only one, J:al('<niti)i<(, in liis Keeve list. Dr. Jones de- 

 tected (}. 2)eniiuanaj o\m example, and the Albatross collectors were 

 the lirst to collect an OliveUa. 



Family MAJIGmp]LLID^:. 



Subocnus PERSICULA SchmiiiHlicr. 

 43. Marginella (Persicula) imbricata Jliiuls. 



One example beach; (Mus. No. 1171)60). 

 Indefatigable Island. 



A single s])ecimen, considerably rubbed, but agreeing in form with 

 the perfect examples in the National collection. 



44. Marginella (Persicula) phrygia Cpr. 



One specimen, beach ; (Mus. No. 1170G8). 



Indefatigable Island. 



The characteristic markings of this species are sufficiently distinct 

 in the solitary specimen collected to make the above determination 

 satisfactory. The National Museum has another example from the 

 Galapagos (No. 50077), the particular island not specified, probably col- 

 lected by Dr. Ilabel. 



Family MITRID.E. 



Genus MITRA Lamarck. 

 45. Mitra effusa Swains. 



One fresh, perfect specimen (Mus. No. 102391). 



James Island. 



The distribution heretofore given as ^'Guacomayo, Central America, 

 Galapagos Islands," nuist be extended northerly to the Gulf of Cali- 

 fornia. Fisher collected it in Mnlege Bay, and several years ago the 

 late Dr. W. M. Gabb detected it somewhere along the Gulf coast of 

 Lower California. 



Genus STRIGATELLA Swainson. 

 46. Strigatella tristis Brod. 



Beach .shells not uncommon. 



Hood, Duncan, and James islands. 



Several examples from Hood (No. 102,'5S1), one shell from James 

 Island, and a fresh specimen from Duncan Island (Mus. No. 1023ir>), 

 The occurrence of this species in the Galapagos group is corroborated 

 by Di'. llabeVs specinu'iis (Mus. Nos. ."iOl^o, 5(ioo7), as well as by other 

 collectors. Tryon, folh)wing C'arpenter, gives the lUHtherly distribu- 

 tion as IMazatlan, but it is found at other and more northerly localities 



