PLATE LI. 



Buccinum subflavum pellucidum, quatuor orbium, ore amplissimo, 

 mucrone acuto. List. H. Conch, tab. 123. 



fig-**- • 



Buccinum fluviatile pellucidum, subflavum, quatuor spirarum, mu- 

 crone acuto, testae apertura patentissima. List, 

 Ex ere. Anat. 2. p. 54. 



Turbo with four wreaths, a remarkable large mouth, and a short 

 acute apex. Wallis Northicmb. p. 370. 



Helix auricularia. Penn. Br. Zool. No. 138. tab. S6.Jig. 138. 



Turbo subflavus pellucidus quatuor spirarum ore patulo. Patulus. 

 Da Costa sp. 53. p. 95. tab. 6. Jig. 17. 



Found in plenty in rivers, ponds, &c. 



FIG. II, 

 HELIX STAGNALIS, 



LAKE SNAIL, Or FRESH WATER TURBO. 

 SPECIFIC CHARACTER 



AND 



SYNONYMS. 



Without umbilicus. Oblong ; spire tapering. Several prominent 

 longitudinal wrinkles which somewhat angulates the shell. Aperture 

 oblong oval. 



