No. 2325. SHELLS FROM TRINIDAD, CALIFORNIA— JORDAN. 



MOPALIA HINDSI Sowerby, 



Common on sides of rock grottoes. 



MOPALIA. species. 



Too young to determine. 



PLACIPHORELLA VELATA Carpenter. 



A few specimens. 



KATHEBINA TUNICATA Sowerby. 



Common ; on the upper side of rocks at about half tide. 



CRYPTOCHITON STELLERI Middendorff. 



Comparatively very common; around extreme low water miirk. 

 So far as I know, the only other collector who has worked at 

 Trinidad is Mr. C. N. Drake who several years ago (while principal 

 of the Trinidad schools) made in this region a considerable collection, 

 which he presented to the city library of Eureka. The Librarian, 

 Mr. H. A. Kendal, kindly furnished me with a list of Mr. Drake's 

 collection. It contains the following species in addition to those 



given above. 



GASTROPODA. 



GADINIA RETICULATA Sowerby. 

 OLIVELLA PEDROANA Conrad. 

 SEARLESIA DIRA Reeve. 

 COLUMBELLA (ALIA) GAUSAPATA Gould. 

 TRITONALIA CIRCUMTEXTA Stearns. 

 THAIS EMARGINATA Deshayes. 

 LITTORINA SCUTULATA Gould. 

 CRUCIBULUM SPINOSUM Sowerby. 

 CREPIDULA ADUNCA Sowerby. 

 NATICA CLAUSA Broderip and Sowerby. 

 ACMAEA PATINA Eschscholtz. 

 ACMAEA SPECTRUM Nuttall. 

 ACMAEA ASMI Middendorff. 

 ACMAEA SCABRA Nuttall. 

 TEGULA BRUNNEA Philippl. 



SCAPHOPODA. 



DENTALIUM PRECIOSUM Nuttall. 



Once used as money by the Trinidad Indians. 



