126 THE NAUTILUS. 



shells, even to fresh transparent specimens. Prof. Verrili has lately 

 addeu the following to Dr. Pilsbry's list : 



Blmmeria heteroclita IMontg.. Hyalina lucida Drap. 



Poeciloronites zonata Verr. (Fig. 17), Slphonarla henica Verr. 



My records add the following: 



Carychiuni exiguum Say. (var.). Sub-fossil. 



Vitrea cellaria Miill. Several at Hamilton. 



Helix pisana Miill. Several at St. Georges (Fig. 18). 



Planorhis dilatatus Gld. Dev. Swamps, (Brackish water). 



Paludestrina teuuipes Cooper (var.). Eve's Pond. 



The beautiful genus Melampus needs revision, and as I collected 

 (personally) several quarts of these bewildering shells, I will attempt 

 the following key to the Bermudian forms : 



A. Aperture narrow and short, shells small, pointed at both ends, 

 greasy, brownish or blackish, no teeth (see Fig. 4). 



M. bidloides Mont. 



B. Aperture wider and longer, at the extreme base a very promi- 

 nent fold, shells larger, apex pointed, greasy, color brownish 

 or purplish, with one or more revolving white or yellowish 

 bands, row of teeth within tlie outer lip very numerous, (Fig. 

 5). M. flavits Gmel. 



1. Color plain brown or [)ur[)le, no stripes, (Fig. 6). 



Var. purpureus n. v. 



2. Size and shape same as purpureus, immaculate white 

 when alive, rare, found only at Hungry Bay, (Fig. 7). 



Var. alhxis n. v. 



C. Aperture still wider, shell wide at the to[), apex abrupt, two or 

 more well developed teetli on the inner lip, often attaining to 

 double the size of jiavus, not green, (Fig. 8 is tlie Florida 

 form). M. coffeus Linn. 



1. Larger, and apex moi-e pointed than in coffeus, the row 

 of teeth in outer lip very irregular and uneven, banded 

 spirally, with brown and white, widtii of bands very irreg- 

 ular, (Fig. 9). Vai-. gundlachi, Pfr. 



2. Pilsbry says : " Scarcely if at all to Ije distinguished from 

 the prior M. gundlachi Pfr., but not attaining so large a 

 size." These are probably the juvenile gundlachi, the 

 lack of color and lustre in the large ones being due to 

 longer exposure and yet they look like another variety so 

 the smaller ones are called (Fig. 10). Var. redjieldi, Pfr. 



