ON LAND AND FRESH WATER SHELLS OF LOWER 

 CALIFORNIA. NO. 5. 



BY J. G. COOPER. 



Dr. Eisen, accompanied by Mr. F. H. Vaslit, made a 

 sl\ort journey to the Sierra San Lazaro, twenty-five miles 

 north of Cape St. Lucas, in the early summer of 1894, 

 collecting for the California Academy of Sciences. At 

 that point they obtained a few land shells, among which 

 is one new species, besides additional specimens of 

 others. They then crossed the gulf to Mazatlan, and 

 spent some months in the region south of there, as far as 

 Tepic, the collections made there, up to 3000 or 4000 

 feet, serving as material for another article following 

 this. 



BuLiMULUs ARTEMISIA W. G. Binuey. 



One specimen is a fourth larger than any before ob- 

 tained, but is bleached and shows no characters to dis- 

 tinguish it otherwise ; 29 specimens brought. 



BuLiMULUs cooPERi T>2i\\( B . ptiula Crosse and Fisher, 

 not of W. G. Binney). 



One specimen, which I before referred to in article 2 

 (Proc. Cal. Acad., 2d series, vol. iii, p. 210), thus: "One 

 specimen has faint traces of two bands on the body, but 

 is otherwise bleached." After seeing the figures in C. 

 & F.'s work, which are represented with two narrow 

 bands on the body-whorl, I supposed that to be the nor- 

 mal condition of the fresh shell. But as Binney's type 

 (which was from nearer the west coast) does not have 

 bands, and also differs in form, while the bands do not 

 quite disappear from bleaching, it seems that C. & F. 

 were wrong in identifying their shells with B . -pilula and 

 a new name is needed. No more specimens are known 

 to have been found lately, and, according to Dr. Dall, 



2d Ser., Vol. V. June 8, 1895. 



