50 RemarTis on Certain SjMcies of 



marks, — "II est a presumer que 1' examen de 1' animal donnera 

 la prcuve qtvil est identiquement semblable a celui de 1' alhola- 

 hrisP I may add that figs. 19, 20, pi. 10, in Chem. ed. 2. 

 Helix, and fig. G, pi. 46 A, in Fer, Hist., are of 11. exoleta, which 

 is erroneously placed in the synonymy of H. alholahris. 



It will be seen that I do not concur with Dr. Binney in sepa- 

 rating 11. major from II. albolalris. Dr. Binney writes (1837), 

 in the Boston Journal, — "Mr. Conrad informs me that he 

 obtained this shell {H. major) several years since, in Alabama, 

 and considered it a new species, but was deterred from pub- 

 lishing it as such, by the generally received opinion that it was 

 only a variety of II. alboldbrisP He observes also, — " this was 

 probably Mr. Say's view, as the specimens figured by Ferussac 

 were received from him." 



In the "Terrestrial Mollusks," Dr. Binney thus remarks on 

 H. major : — 



"It cannot be confounded with any other than H. albolahris, and dif- 

 fers from it in the following particulars : — It is much more globose, of a 

 coarser and more solid texture, and the striae of increase are much more 

 raised and prominent, so much so, indeed, as to leave distinct grooves 

 between tliem. The revolving striae, so distinct on that shell, are either 

 wanting or very indistinct. The aperture is smaller in proportion to the 

 size of the shell, less flattened towards the plane of the base, and more 

 rounded. Tlie pillar lip and umbilicus are in many instances covered 

 with a smooth and shining, semi-transparent, testaceous callus. The 

 margin of the lip is thickened, the lip itself is narrower, less abruptly 

 reflected, and not so much flattened, and there is often a tooth-like pro- 

 cess on the inner and upper side of the margin near the umbilicus. The 

 color of the epidermis is generally much darker. The only considerable 

 variation in the characters of the shell is caused by the depression of the 

 spire in some individuals, and indeed in all specimens from certain locali- 

 ties. In its most perfect condition it is often subconical. It is subject 

 to some irregularities in the form of the mouth, and there is sometimes 

 an indication of pale bands in the epidermis of the body whorl." 



He adds, — 



