Binney on Terrestrial Mollvsks. 95 



more contracted umbilicus, as well as the following char- 

 acteristics noticed by Bland. 



The groove within the uinbilicu.s is a very marked feature in 

 Ferussac's species, and though not referred to in the description, is 

 distinctly shown in one of his figures ; it is entirely wanting in H. 

 leporina, and also in pustuloides. This groove is not only an ex- 

 tei-nal character, but its presence modifies the internal stricture of 

 the shell. On opening the base of the last whorl immediately be- 

 hind the aperture, a strongly developed transverse tubercle is seen 

 within, from which a strong ridge-like lamella runs round the umbil- 

 ical opening, corresponding in extent with the groove. This tuber- 

 cle, and the extension of it, are entirely disconnected by a sinus or 

 channel from the floor of the penult whorl. 



The hirsute character of this species is not alluded to by any 

 author. The outer edge of the peristome in specimens from St. 

 Augustine, is of a deep rose color. 



The true pustula has been found at various localities in 

 Georgia, at St. Augustine, Fla. (Dorman), and in Texas, 

 (Moore, Roemer.) 



HELIX LABYRINTHICA Say vol. ii. p. 202, pi. xvii. fig. 3. 



V Helix labyi-inthica Say, (Binney's ed.) p. 10. 



Chemnitz, 1. c. i. 382, (1846). 

 Pfeiffek, 1. c. iii. 262. 

 Reeve, Cou. Icon. No. 728, (1852). 

 DeKay, N. Y. Moll. 39, pi. iii. fig. 31. 

 Desha YES, in Fer. i. 210. 



I have specimens of H. labyrinlhica from the Northwest, 

 Canada, Florida, and Texas. Its range is probably not 

 surpassed by that of any other species. 



Lea is erroneously given as authority for the speciific 

 name in Adams's Genera of Recent Mollusca. 



HELIX I IGERA Say vol. ii. p. 204, pi. xxxv. 



Helix ligera Say, (Binney's ed.) p. 19. 



DeKay, N. Y. Moll. p. 40, excl. fig. 



