•f 



R 



■>, 



494 



Binney^s Monograph of the Helices 



■H' 



I'i. 



There is certainly a strong resemblance between many 

 of our species which, with H, albolahris as their type, 

 form a well marked division. But as their differences are 

 as constant as their resemblance^ it cannot be proper to 

 unite them into one. 



10. HELIX DENTIFERA. 

 . Plate XXI. 



I 



H. testd orbiculato-dcprcss&j imperforate, luteo-corneS. ; spM sub- 

 planulata, subtusconvexa ; anfractibus transverse striatis, strlis crebris, 

 minutis ; peristomate albo, margine late reflexo ; columella valdc uni- 

 dentatS. 



Synonyms and References- 



Helix dentifera. Nobis. 



-jb 



Description. 



*t- 



Animal. Greyish on the sides and posterior extremity, 

 brownish on the upper parts, darker on the head and neck, 



foot long and narrow, superior tentaculse long and slender, 

 eyes black. 



Shell. Flattened, convex on the upper surface, con- 

 vex below : epidermis^ yellowish horn-color, immaculate : 

 spire depressed : whorls, five, with delicate, parallel, ob- 

 lique striae : suture, distinct, not deeply impressed : aper- 

 ture, contracted by the lip, flattened towards the plane of 

 the base ; lip white, broadly and abruptly reflected : pil- 

 lar-lip with a prominent, white, tooth-like process nearly 

 parallel with the lower margin of the aperture: hase 



IP 



convex. 



inch. 



Greatest transverse diameter about three quarters of an 



