THE PACIFIC COAST. 9 



DESCRIPTION. 



Animal not observed. 



Shell globose-conic, with five slightly-rounded whorls; 

 spire little elevated ; suture distinct ; upon the body whorl 

 a dark revolving -band, hardly discernible ; aperture very 

 oblique, shape of a horseshoe ; peristome thickened, heavy, 

 dirty white, slightly reflected at the umbilicus, which it 

 entirely conceals, near its junction with the columella fur- 

 nished with a tooth-like process, the extremities connected 

 by a heavy ash-colored callus, which is spread more lightly 

 over the whole parietal wall ; epidermis grayish yellow, 

 apex rufous. The striae of growth are very numerous and 

 distinct, crossed by numerous, regular, revolving lines, so 

 deeply impressed as to entirely separate them into small 

 sections ; thus the whole surface of the shell is divided 

 into minute, raised parallelograms, separated by the deep 

 longitudinal and horizontal furrows. 



Greatest diameter, 22 ; lesser, 19 ; alt. 15 millimetres. 



Geographical Distribution. Found in Oregon Territory. 



Remarks. This shell I found in the collection of my 

 father. It was labelled H. Nickliniana Lea, var., and as 

 such is figured in the Terrestrial Mollusks. I cannot be- 

 lieve, however, that any species can admit of varieties dif- 

 fering so much as this does from Nickliniana. To Mr. 

 Lea's figure and description it bears no resemblance what- 

 ever, either in shape or sculpturing. 



It may readily be distinguished among the Helices of 

 the Pacific coast, by its grayish, heavy shell, its thickened 

 lip, and above all, by the peculiar markings of the surface. 



HELIX REDEMITA. 



PLATE VI. FIGURE 1. 



Testa globoso-conica, imperforata, tenuiscula, minute et confertim gran- 

 ulata, corrugata, rufo-brunnea ; apex laevigata, obtusula, spira elevata ; 

 anfr. 6 convex!, sutura impressa distinct!, ultimus permagnus, inflatus, ad 



2 



