164 SHELLS OF LOWER CALIFORNIA— STEARNS. 



lected B. Bailei/i at Cape St. Tjuras, thus verifying Fisher's notes as to 

 habitat. 



BULIMULUS (SCUTALU8) PALLIDIOR, Sowerby. 



Five specimens. Carmen Island (No. 56591, U. S. N. M.), also Santa 

 Margarita Island (Xo. 10103(>, U. S. N. M.). 



The above examples are of the typical form, and I believe that these 

 are the first of the species that have been reported from the islands or as 

 having been found at a locality not on the peninsula. The last were col- 

 lected by Mr. Townsend, of the U. S. Fish Commission steamer Alba- 

 tross., and it will be noticed that these islands (Carmen and Margarita, 

 are on opposite sides of the iieninsula. The Santa Margarita specimens 

 are of the rather robust variety described by Dr. Gould as B. vegetus. 



An interesting example from Carmen Island, which is registered as 

 B.pallidior Sby. (No.58652, U. S. N. M), exhibits such characters as make 

 it a connecting link with Gould's vajeUis and the protens of Broderip 

 so-called, in the tendency to that sculptural texture of the surface 

 which is called shagreened, or covered with fine granulation. This aspect 

 of sculpture is not uncommon in the land shells that inhabit insular 

 stations, or saline, sterile, and alkaline sandy regions. Many species 

 could be named which occasionally furnish individuals which exhibit 

 this peculiar facies. Examples of this species collected by Prof. George 

 Davidson at San Jose del Cabo (Ko. 58651, U. S. N. M.) in March, 1873, 

 were kept by me undisturbed in a box until June 23, 1875, when they 

 were taken out for examination. I placed them in a glass jar with some 

 chickweed and other tender vegetable food, and a little tepid water so 

 as to make a warm humid atmosphere. This hospitable treatment 

 induced them to wake up and move about after their long fast and sleep 

 of two years, two months, and sixteen days. Subsequently all died but 

 one, which was exhibited at a meeting of the Cal. Acad, of Sciences, 

 October 18, 1875. This latter example, it will be noticed, lived longer 

 than his fellows, viz, two years and nearly seven months. These San 

 Jose del Cabo specimens are now in the National Collection. The above 

 has been referred to as an introduced form, which I regard as altogether 

 improbable. The same aspects of variation that are seen in the shells 

 of the altcrnatusj Schiedearms, and patriarchus bulimoids of Texas, 

 Louisiana, etc., are exhibited in a greater or less degree by their rela- 

 tives of the Gulf of California region, more particularly by the pallidior 

 form, which often exhibits great difference in the size of examples 

 from one colony as compared with specimens from another locality. 

 The roughened surface forms of pallidior have been named by Dall 

 var. striatula. 



BULIMULUS (ORTHOTOMIUM) SUFFLATUS, G o u 1 d. 

 + B. vesicalis, Gould. 

 Numerous examples. 



Point San Quentin (Nos. 9441, 9442, U. S. N. M.) Fisher, and La 

 Paz, Belding (Nos. 34116, 34118, U. S. N. M.), and same locality 

 Oapt. Forrer. The National Collection has other examples from "' Lower 



