VOL. III.] Lower Calif or nian Shells. 15 



4. B. GABBi Crosse & Fischer, 1872. Locality unknown, and 

 only one specimen known, which has characters between those of 

 B. pallidior and B. proteus. These two allied forms are not re- 

 ])orted from any one locality except Cape St. Lucas, therefore a 

 hybrid theory cannot now be proved. It may prove a variety, if B. 

 vegetus Gould, which is also intermediate, is not a good species. 



5. B. INSCENDENS W. G. B., iSqi. " Cape St. Lucas and 450 

 miles up west coast" (Cedros Is. lat. 28° 02' not confirmed), Xan- 

 tus. 



Var. BRYANTi J. G. C, 1891. San Jose del Cabo, lat. 23° 24', 

 to La Paz, lat. 24^ 12'. The east coast form, more developed. 



6. B. PALLIDIOR Sowerby, 1833. "Chili," Cuming {?{€\^q.x). 

 "West coast of peninsula for 350 miles north (to Ballenas Bay, lat. 

 26° 45', not confirmed), Xanius. La Paz, Maj. Rich. San Juan, 

 east coast, lat. 26° 20', Lt. Greene, type of B. vegeius Gould, 1853. 

 Near San Jose del Cabo to La Paz, Bryant. " San Diego " (Car- 

 penter), not confirmed. Perhaps imported from Chili into gardens 

 with roots, and has since died out northward. No other collectors 

 seem to have found any Bidimuli on west coast north of lat. 25°. 

 Mr. Binney mentions several species carried about with roots of 

 banana, etc., from one country to another, and this may account 

 for the introduction of this and B. proieiis on to the peninsula. 



7. B, PILULA W. G. B., 1861. Todos Santos, lat. 23^ 25', to 

 Margarita Island, lat. 24^^ 20', Xanius. San Jose del Cabo, Bryant. 



8. B. PROTEUS Broderip, 1832. "Peru and Chili," Cumijigf, 

 (Pfeiffer). "Cape St. Lucas," Xaiitus. Northern Peru, Orton, 

 (Binney). Perhaps another importation as with B. pallidior. The 

 question of their importation as food is yet undecided. 



9. B. SPIRIFER Gabb., 1867. Near La Paz, lat. 24^ 10', to San 

 Borgia near lat. 28*^ 40', among rocks, in the mountams near east 

 coast, Gabb. San Borgia is a little west of the middle line in cross- 

 ing the peninsula, and thus the most northern and western locality 

 for Bulimuli as yet well authenticated. It is about 450 miles from 

 the cape, and may possibly have furnished Xantus with northern 

 specimens, which could be mistaken for B. pallidior. With such 

 an extensive range near the east coast it is strange that nobody had 

 found it before. Gabb's figure is more like B. pallidior than Bin- 

 ney's. 



