Binney oti Terrestrial MoUusks. 49 



" III 11. c/ausa the umbilical region ia more widely exca- 

 vated, and the groove, behind the retlected lip, producing 

 the contraction of the aperture, is continued at the base 

 of the shell, becoming wider as it joins the umbilical 

 opening. In H. MitdieUiana the groove is almost obliter- 

 ated at the point of reflection of the lip over the um- 

 bilicus, by the more tumid character of the last whorl." 



HELIX BERL-ANDERIANA Moricand vol. ii. p. xlix. fig. 1. 



Helix Berlayideriana Deshayes, 3d ed. Lam. iii. 316. 



Chemnitz, ed. 2, ii. 275, pi. cxxiii. figs. 15-18. 

 Pfeiffer, Mon. Hel. Viv. iii. 227, (nee. i.) 

 Reeve, Con. Icon. No. 708, (1852). 

 Hdix pachylonm JIenke in Pfeiffer 1. c. i. 323; Zeitsclir. f. Mai. 1847, p. 32. 

 Helix virc/iiialis Pfkiffer, Mon. Hel. Viv. iii. 132, i. 165 sub nomine Berlander- 

 iance. 

 Chemkitz, ed. 2, i. 260, pi. xxxviii. figs. 18, 19. 



There is considerable confusion in the synonymy of this 

 species, owing to the extreme varieties having been con- 

 sidered distinct species. I have never seen H. virginalis^ 

 but am persuaded by the description and figure published 

 by Pfeiffer in Chemnitz that it is identical with Berlander- 

 iana. I give below his description and on pi. 77, fig. 22, 

 a fac-simile of his figure. Those persons who follow him 

 in separating the two, will remove H. virginalis and its 

 references from the above synonymy. In so doing, it 

 must be borne in mind that the shell described by him as 

 Berlanderiana in vol. i. of the Monograph, is in vol. iii. 

 considered virginalis. (See also Zeitschr. f. Mai. 1848, 



P-115-) 



Pfeiffer acknowledges in vol. iii. that his pachyloma of 



vol. i. is the true Berlanderiana. 



The shell figured on pi. 49 as H. albozonata will be 

 treated under the following species. 



The species is found also in Mexico. 



JOURNAL B. S. N. H. 7 



