*' 



fe 



n.'-- 



inhabiting the United States. 473 



Section L — Lip reflected. 



A. umbilicus closed^ or nearly so 



* Aperture without teetli. 



. "^ 



1. HELIX MAJOR. 



Plate XII. 



H. testi orbiculato-globosi, imperforata, luteo-corned ; striis elevatis, 

 crebrisj undatis ; anfractibus sex ; ultimo anfractu ventricoso ; apcrturi 

 subrotundi, contracta, prope basim subunidentat^ ; labro albo, crasso, 

 marglne reflexo. 



Synonyms and References. 



bolabns, var. maxima, FerussaCj Hist. N( 

 MoIL PL XLiii. fio;. 4. — xLiv. fig. 7. 



-> 



Description. 



/ 



Animal. Headj upper part of neck, and tentaculae 

 ferruginous ; eyes black ; foot rusty, the sides more or 

 less shaded with blue by the fluids of the animal, which 

 are visible through its semi-transparent substance. Ten- 

 taculae short in proportion to the size of the animal, and 

 robust, their situation when retracted marked by brown 

 spots. Foot large, and thick. Genital orifice, indicated 

 by a slight prominence. Superficial glands, large, and - 

 distinct. On the centre of the back is a line of them of 4il 



a 



an oblong narrow shape with a furrow on each side. 

 Those on the sides and posterior part of the foot, when 

 exammed by a microscope, exhibit numerous subcuta- 

 neous, white dots, or points, arranged in clusters. Length 

 equalling twice the breadth of the shell. 



VOL. I. PART IV. 61 



