'J 9 



ly distinguishes it, but assigns to it the rank only of a variety of that 

 .species, with tlie following characters: 



'-.-^ . Depressior, maculis fulguratis cinereis ornuta, pcrist. magis 

 incrussato: diam. maj. 26, rain. 23, alt. 13 milL" 



The following is the synonymy of tliis shell, as given by Dr. Pfcif- 

 fer : 



'■^ Helix sinnata Born Mus. p. 370. t. 14 f. 13. 14. 



Ddess. recueil t. 2G, f. 10. 



tmr. Oheni. ed. II, Helix t 15. f. Z). 6. 



slnuosa Gmel p. 3622. N. 103. 



Fer. pr. 117. Hist. t. 54. 3." 



The ligures of Born appear to have been made from one of the 

 rather more globular forms of this group of Helices; possibly from 

 that which we have called H. valida (p. 77), or more probably from 

 some variety of II. sinuata as we would restrict this species. The 

 form is plainly much less compressed than that of H picturata. The 

 I'gure of Ferussac seems to represent the same vari(;ty. 



In the text, Born expressly says of his shell, " color fu?cus, fascia 

 media cujiisvis antVactus transvcr.-a alba." This is evidently an ac- 

 curate description of the color of the typical H. sinuata, but not of 

 the color of H. picturata. 



Gmelin, in the thirteenth edition of the Systema Naturae, refers 

 to the above quoted figures of Born in the description of H. sinuosa. 

 If Born's figures represent Gmelin's shell, then, for the reasons above 

 given, H. sinuosa is not H. picturata. Gmelin's description is equal- 

 ly applicable to several species of this gi'oup, and even of other 

 groups of Helices, except in respect of one phrase, " apertura trans- 

 versa se-plemdentataP which is not true of any in the group. If there 

 be no error in his text, it would seem impossible to refer any of these 

 shells to n. sinuosa, for the number of teeth in them is absolutely 

 constant. In no case therefore can tlie name of II. sinuosa be used 

 for II. picturata. 



Of the two remaining references, in the synonymy of Dr. Pfeiffer, 

 both Delessert and Kuster (the latter in Chem. Ed. 2da.), unques- 

 tionably have figured with accuracy and elegance the shell which we 

 have called II. picturata, but they have confounded it with II. sinu- 

 ata. 



To these references may be added Chenu's plate 12 of Helix, fig. 

 10, which, however, like many other of Chenu's plates, is absolutely 

 identical with that of Delessert, a few additional figures having beer» 

 engraved in the spaces between the figures of the latter author. 



