196 SHELLS OF LOWER CALIFORNIA— STEARNS. vol.xvii. 



Boca de los Piedras (No. 46459, U. S. IST. M.); Loretoj Pauaina; Payta; 

 Manta; Galapagos Islands. It has a more northerly distribution than 

 herein given. 



POLYNICES (LUNATIA) OTIS, Broderip and Sowerby. 



Several exami^les. 



Bocade los Piedras {^o. 46546, U. S. N. M.); La Paz; Tres Marias; 

 Payta, Peru; Galapagos Islands. At the latter a variety is found 

 which has received the name of galapagosa, Kecluz, it is pretty close 

 to if not absolutely the same as the following. 



POLYNICES (LUNATIA) OTIS, var.=FUSCA, Carpenter. 



One specimen at each place Tres Marias (No. 46547, U. S. N. M.); 

 Acapulco (No. 46545, U. S. N. M.). The first example somewhat the 

 worse for the rubbing it got in the surf, resembles the Indo-Paciflc 

 form "^. somiw Chemnitz, New Zealand and Viti Islands," etc., so 

 closely that Tryon thought it was that species. It does not approach 

 very closely to somiw, but the importance of an extensive geograi)hical 

 and varietal series was seen in this case, as well as hundreds of others, 

 for it enabled us to connect it without trouble with its geographical 

 congeners. It is with barely a doubt the variety to which Dr. Car- 

 penter gave the name of ^-fusca.", 



POLYNICES (NEVERITA) RECLUZIANA, Reeve. 



Two examples from each of the following places: 



La Paz (No. 46533, U. S. N. M.) ; Tres Marias (No. 46535, U. S. N. M) ; 

 Bo(;a de los Piedras (No. 75000, U. S. N. M.); San Juanico; Loreto; 

 and elsewhere northerly and to the south, Pichilinque Bay, also fossil 

 on Cerros Island, Albatross. 



SIGARETUS DEKILIS, Cx o u 1 d . 



infrequent. 



La Paz, living (No. 46555, U. S. N. M.) ; Altata (No. 46553, U. S. iT. M.). 

 The nucleus, nuclear whorls, and general aspect of this species is very 

 much like S. perspectiva Say of the Florida region. 



Siapei-faiTiily DOCOG-LOSS.^. 



Family A c m ^ i d ^. 



ACM^A DALLIANA, P i 1 s b r y 



Mannel Conch., VoL xiii, p. 13, PL vii, tigs. 57-60. 

 Several examples (No. 32614, U. S. N. M.). 



Angel Island, Pt. Eefugio; also at (f) San Francisquita Bay and (?) 

 LosAuimas Bay. Chief examples measured 2.15 long, 1.55 lat. milli- 



