38 CALIFORNIA ACADEMY OF SCIENCES. 



pearls, but will find other shells for money and collect 

 many of the larger kinds for food, eating nearly every 

 larffe mollusc that is tender and well flavored. The col- 

 lections were thus made chiefly at San Jose del Cabo, 

 twelve miles east of Cape St. Lucas, at La Paz and at 

 San Jose Island. Mr. Brandegee and Dr. Eisen also 

 contributed several species from the same places. These 

 places are near enough to the locality of the Xantus col- 

 lection to be considered as belonging to the same local 

 fauna, yet several species occurred that are new to the 

 region. As almost every collection of shells, however 

 small and imperfect, adds some new facts to our knowl- 

 edge of geographical distribution, a list of these is thought 

 to be worthy of publication. Some of the doubtful forms 

 were sent to Dr. Dall of the U. S. National Museum for 

 comparison with authentic specimens and are given as 

 identified by him. Duplicates of many of the shells (and 

 also of many others, native and foreign) are ready for 

 exchange, in return for species not contained in the 

 Academy's museum, or not in good condition. 



CLASS GASTROPODA UNIVALVES, ETC. 



1. AcM^A DALLiANA Pilsbry. 2, very near A. scabra. 



2. AcM^A FAscicuLARis Menke. 3, young only. 



3. AcM^A PEDicuLus Philippi. Large, beach-worn. 



4. Alaba supralirata Carpenter. Also Mazatlan 



and Cape St. Lucas. 



5. Anachis t^eniata Philippi. Rare, San Jose del 



Cabo. 



6. Anachis coronata? Sowerby. 5, larger than 



usual. 



7. Aplysia ? Several young. San Jose del 



Cabo. 



8. AsTRALiuM OLivACEUM Wood. 15, San Jose del 



Cabo. 



