EASTERN PRUVINCE INTERIOR REGION SPECIES. 261 



rliomboidal; peristome simple, acute, having its extremities uuited. 

 Greater diameter Gi, lesser 5^"""; height, 2""°; width rm. 277. 

 of umbilicus, 4A""". (Harper.) 



Patula Bryanti, Harpek, Jonrn. Cinciuuati Soc. N. H., iv, No. 3, 

 '2:)8, figs. 1, 1ft (1881). 



Mitchell County, I^orth Carolina; Black Mt., N. C. ; a. 

 species of the Cumberland Snbregion. 



Probably a bicarinate form of P. pcrspectiva, but r?R^anti. 

 equally claiming a distinct name. 



DOUBTFUL SPE( lES OF PATULA. 



Patula Mazatlanica. I do not believe this species c:in really exist at Lone Mountain, 



Sau Francisco County, California, as asserted. See L. & Fr.-W. Sh., i, 82. 

 Patula hicruslata is a Microphijsa {q. v.), as is also 

 Patula vortix (q. v.). 



Helix tenuistriaia, Binney, is also a Patula. It is an unknown species. Tlio following 

 description is copied from manuscript of Dr. Binney : Shell flattened, the 

 upper surface acutely cariiiated ; epidermis light horn-color; whorls 7, nar- 

 row, increasing in width very gradually from the apex to the aperture, stri- 

 ated with tine, prominent, distinctly separated, curved lines; aperture an- 

 gular, depressed, contracted; peristome above the carina acute, below a 

 little rellected ; base subconvex, smooth ; umbilicus open, moderate in size, 

 exhibiting two or three volutions. Greatest transverse diameter about one- 

 half an inch. 



Found hitherto only in the eastern part of Tennessee, whence a single 

 specimen was brought by Mr. Haldeman. This pretty species is described 

 with some reluctance from a single specimen, as it may be considered doubt- 

 ful, until another be found, whether it may not be a foreign shell introduced 

 by mistake among Tenuessean shells. It is quite flat ou the upper surface, 

 rising a little towards the apex; the whorls, which are distinctly marked, 

 are beautifully striated with delicate, prominent curved lines, which are 

 crowded towards the apex, and separately by a distinct interval on the outer 

 whorl; they terminate ou the edge of the carina, which is a little plaited by 

 them, the base below being smooth. The aperture is narrow and marked by 

 an angle at the carina. The lip below the carina has a distinct though nar- 

 row reflection. The umbilicus is moderate, conical, and rather deep, exhib- 

 iting about three volutions. In Lamarck's arrangement it would be a Caro- 

 coll a. 



Helix tenuisiriata, Binney, Bost. Journ. Nat. Hist., 1842, iv, part i, cover, '.i. — Pfeif- 

 FER, Mon. Hel. Viv., i, 432.— W. G. Binney, Terr. Moll, iv, 118; L. & Fr.-W. 

 Sh., i, 77 (1869). 



Helix vortex, teste Gould (non Pfeiffer), Terr. Moll., iii, 34. 



Helix limitaris, G. M. Dawson, Land and Fresh-Water Mollusca collected during 

 the Summers of 1873, 1874, in the Vicinity of the 49th Parallel. Lake of the 

 Woods to the Rocky Mountains. British North American Boundary Commis- 

 sion ; Report on the Geology, &c. Montreal, 1875. pp. 347-350. I have seen 

 young individuals kindly sent me by Mr. Dawson, and suspect them to be 

 immature individuals of some variety of /'. strifjosa. The original description 

 here follows: Shell cous[)icuously uml)ilicated, globosely depressed, solid, 

 coarse; whorls carinate at the periphery and subcariuate near the umbilicus, 



