150 A MANUAL OF AMERICAN LAND SHELLS. 



dilated, reflected, coveriMg the umbilicus. Greater diameter 22, lesser 

 19""™ ; height, 19 '"™. (Forbes.) 



EeUx A'elletii, Forbes, Proc. ZooL Soc. Loudon, 1850, 55, pi. ix, fig. 2, a, ft. —Reeve, 

 Con. Icon., No. 665 (1852).— Pkeiffer, Mon. Hel. Viv.,iii, 183; in Chemnitz, 

 ed. 2, ii, 467, pi. clvi, figs. 19, 20 (18.')3).— W. G. Bixxey, Terr. Moll., iv, 17, 

 pi. Ixsxvi, fig. 12; L. & Fr.-W. Sli., i, 176, fig. 309 (1869). 



Arionta Kdktti, Tryon, Am. Jonrn. Couch., ii, 317 (1866).— W. G. Binney, Terr. Moll., 

 V, 361. 



San Diego, Cataliiia Island, Sau Nicolas Island (?), California, in the 

 Cahfornia Region ; also 12 miles east of San Diego, at 2,000 feet eleva- 

 tion. 



Animal bluish slate-color. 



The specimen figured is from Catalina Island, California. I am pos- 

 itive that it is correctly referred to Kelletti. The umbilicus is entirely 

 closed in mature specimens. There are traces on different parts of 

 this shell of three different series of sculi)turing : the wrinkles of 

 growth, revolving impressed lines, and a series of minute granulations 

 running obliquely, sometimes almost perpendicularly, to the incremental 

 wrinkles. 



Forbes's original figure of H. Kelletti is cojiied in Terr. Moll., V. 



For comi^arison with A. Stearnsiana, see that species. 



Jaw^ as usual ; G ribs. 



The lingual membrane (Terr. Moll., Y, Plate IX, Fig. I) has 57-1-57 

 teeth ; the sixteenth has a side cutting point ; the twentieth tooth has 

 its inner cutting point split ; the outer cutting point of the marginals 

 is very rarely bifid. 



The genitalia of a Catalina Island specimen is figured (Terr. Moll., V, 

 Plate XIII, Fig. D). The ovary is light yellow. The oviduct is white. 

 The genital bladder is light yellow. The prostate is large and yellow. 

 The whole genital system is long and narrow. The genital bladder is 

 small, globular, on an extremely long and delicate duct, which enters 

 the vagina at its upper end. The duct just below the bladder receives 

 a branch duct, very long, flagellate, three times the diameter of the 

 duct itself. The penis sac is long, stout, cylindrical, tapering towards 

 its apex and prolonged into a very long, delicate flagellum. The vas 

 deferens enters at the point where the flagellum commences. The re- 

 tractor muscle is inserted half way between the vagina and the en- 

 trance of the vas deferens. Opposite the mouth of the penis sac is a 

 small sac-like organ, probably a dart sac or vaginal prostate. 



As stated below, this arrangement of the genitalia differs somewhat 

 from that of Stearnsiana. 



