344 Rev. Mr. Lowe's Description of the Animal, Sec. 



sketches, f. 4 and 5, drawn considerably larger than life from another 

 and larger specimen, to render more intelligible the structure as above 

 described, the spire has become partly visible ; and nothing remains of 

 the enveloping portion of the cuirass but a narrow border round the 

 edge of the outer lip, and a lobe stretching up on the right side, towards 

 the spire, a. in f. 5 is the supposed slime-secreting organ (Sac de la 

 viscosite, Cuv.,) seen through the shell; beneath which, more on the 

 left, is the pericardium, but not seen in this figure. The shaded part b. 

 is the liver. 



TestcE Icones et Synonyma. 

 Helicolimax Lamarckii, Fhuss., Tabl. Syst. p. 25, n. 3, and Hist. JVat. 



L 9,/. 9, opt. 

 Vitrina Cuvieri, Sowerb,, Gen. f. 2, opt.; omisso syn. " Helicarion Cu- 



vieri, Feruss?" 



I am much inclined to suspect that the shell above referred to, figured 

 by my friend Mr. Sowerby in his admirable " Genera" for the Helicarion 

 Cttvien of Ferussac (probably found in New Holland), may have been 

 rather derived from an animal identical with the present species. The 

 figure is so good a representation of the shell belonging to my animal, 

 that I have not thought it necessary to give here a fresh representation, 

 conceiving it to be already perfectly well illustrated by this figure and the 

 one of Ferussac above quoted. At any rate, should the shell figured by 

 Sowerby prove an authentic Helicarion Cuvieri, derived from an un- 

 doubted source, it may serve to teach how little reliance can be placed on 

 the shells alone of this tribe for specific, or even generic distinctions. 



R. T. L. 

 Funchal, Madeira, 

 Nov. 13, 1828. - 



