108 A MAKUAL OF AMEEICAN LAND SHELLS. 



Lingual membrane, as usual in the Hclick1a\ (Plate Y, Fig. K, of Terr. 

 Moll., Y), long and narrow. Teeth 31-1-31, with about 15 laterals, 

 but the change into marginals is very gradual, the latter being a simple 

 modification of the former. My figures give a central with the first, 

 sixteenth, and thirty-first teeth. 



See remarks under Binneya notabilis. 



Biiineya notabilis, J. G. Cooper. 



Shell im])erforate, depressed orbicular, ear-shaped, opaque, thin, light 

 horn-color, striated; spire scarcely elevated ; apex obtuse; suture 



pj^ ^^ deeply impressed; 1^ whoils, the first half with about thirty 

 revolving, separated, prominent, abruptly ending rib-like 

 ^^'^ strise, the last comprising almost the whole shell, depressed 

 B.notahdu. j^^^j^,^^ y^py rapidly increasing; aperture subhorizontal, 

 transversely oval, very large ; peristome thin, acute, simple ; columella 

 arcuate, with a thin deposit of transparent callus; apex visible from 

 below . Greater diameter 7, lesser, 3^™'" ; height, li™'" ; greatest trans- 

 verse diameter of aperture, 7. Of a larger specimen, 14™'" greater 

 diameter. 



Binveysi' volahiUs, J. G. CoOPER, Proc. Cal. Acad. Nat. Sci., iii, 62 (1863), figures.— 

 Tryon, Aru. Jouni. Conch., ii, 244 (1866).— W. G. Binney, L. & Fr.-W. Sh., 

 i, 68, tig. 11-2 (1869): Terr. Moll., v, 245. 



Santa Barbara Island, California; also Guadelupe Island oif the 

 coast of Mexico ; a species of the Mexican fauna. 



For views of the animal, and jaw, see above.* 



Mr. Hemphill, who has contributed so largely to our knowledge of 

 the land shells of the Pacific coast, has visited the island of Santa 

 Barbara; among the species found by him is Binneya notabilis, which 

 was originally described from thence by Dr. J. G. Cooper. Mr. Hemp- 

 hill has kindly sent me living specimens, as well as others preserved in 

 spirits. I am therefore able to give a full generic description, with a 

 figure of the animal as it appears when half extended. I did not suc- 

 ceed in inducing it to protrude itself fully. 



When received, the living exami^les were furnished with the peculiar 

 epiphragm described by Dr. Cooper. On becoming again active, this 

 epiphragm was left entire, still adhering to the surface on which the 

 animal had formed it. In one individual I observed a second, inner 

 epiphragm, simple, without the perpendicular walls. 



* Fig". 74 is drawn from an ant'ionlic .specimen. 



