232 A MANUAL OF AMEHrCAN LAND SHELLS. 



ains, between Franklin and Hayesville, N. C, at about 5,000 feet eleva- 

 tion, and on Pinnacle, Blue Kidge. A species of the Cumberland Sub- 

 region. 



Vilrina latissima, Lewis, Proc. Acad. Nat. Sc. of Phila., 1875, 336, pi. xxiii, fig. 7. — W. 

 G. BiNNEY, Terr. MoU., v, 136, fig. 51. 



Fig. 254 is drawn from the original specimen. 



Lingual membrane (see Fig. 11a, p. 56) as in Zonites, broad and not 

 long. There are 30 rows of 24-1-24 teeth. There are 6 laterals, 

 scarcely one perfect, all being rather transition teeth, on each side of 

 the central tooth; the seventh tooth is a marginal ; the twelfth is the 

 largest. 



The caudal mucus pore is circular, bordered by a narrow, transversely 

 grooved rim, and when closed is completely covered; when open, the 

 cover is raised along its longitudinal center into a sharp caiina, leaving 

 posteriorly, when vie^red from that quarter, an erect, triangular open- 

 ing. It thus differs from the usual simple longitudinal slit found in 

 most of the !N^orth American species of Zonites. Z. Icevigatus has the 

 nearest approach to this peculiar form of pore. 



Genital system (see Ann. N. Y. Ac. Sc, I, Plate XIY, Fig. B) : 

 The ovary is very large and stout ; the genital bladder is globular, on 

 a short, narrow duct; the penis sac is very long, narrow, cylindrical, 

 receiving the retractor muscle near its basal termination and merging 

 at its apex into the vas deferens ; no accessory processes to the penis 

 sac such as are found in Zonites capnodes, &c. 



L.IMAX, Liinsr, 

 Body subcylindrical, lessening towards the posterior extremity, 

 which terminates in a point. Back with a carina or keel when con- 

 tracted, convex when extended. Integuments with longitudinal elon- 

 gated glands, and anastomosing furrows, arranged in the same manner 

 upon both sides. Mantle small, anterior, oval, marked with fine con- 

 centric striae or prominent wrinkles, unattached and free at the front 

 and sides but connected with the body at its posterior part, and con- 

 taining in this part a testaceous rudiment or shell. Base of foot not 

 expanded at margin, having a narrow locomotive disk running longitud- 

 inally along its center, and separated from the sides by a well defined 

 line or furrow. Respiratory orifice near the right posterior margin of 

 the mantle, large. Anal orifice immediately adjacent to but a little below 

 and anterior to the respiratory orifice, with a cleft or fissure through 

 the mantle from the orifice to its edge. Orifice of organs of generation 



