GASTROCOPTA, SOUTH AMERICA. 91 



the apex rather obtuse. Whorls 5i/ 2 , convex, the last scarcely 

 one-third the length, rounded basally. Columella obsoletely 

 folded. Aperture oblique, truncate-oval; parietal wall hav- 

 ing one tooth-like fold; peristome thin, the right margin 

 strongly curved above, a little expanding; columellar some- 

 what dilated, spreading. Length 2%, diam. iy 3 mm. (P/r., 

 1853). 



Aperture in perfect specimens five-toothed : one compressed 

 parietal, one columellar, three palatals, of which the middle 

 one is distinct, the others obsolete (P/r., 1859). 



Habitat unknown (Mus. Cuming and Pfeiffer). ? Bahia, 

 Brazil. Uruguay: Santa Lucia near Montevideo (Paz, in 

 Hidalgo). Argentina: a barranca on the bank of the Parana, 

 near Rosario; Sierra de Poeho at Cerro Salado; and Sierra 

 S. Luis, Valle de Cautana (Doering). 



Pupa oblonga PFR., Monographia Hel. Viv., iii, 1853, p. 

 536 ; iv, 685 ; vi, 332 ; viii, 403 ; Proc. Zool. Soc. Lond., 1852, 

 p. 69 (1854). KUESTER, Syst. Conchyl. Cab., p. 173, pi. 21, f. 

 1, 2. HIDALGO, Viaje al Pacifico, Moluscos, p. 141. DOERING, 

 Boletin Acad. Nac. Ciencias de la Rep. Argentina, iii, 1879, 

 p. 81. 



The figure of Kuester copied in pi. 17, fig. 9, does not show 

 the upper and lower lip-teeth, which Hidalgo remarks are 

 noticeable in adult examples. 



Doering copied Hidalgo's description, adding the remarks 

 that it differs from P. microdonta by the larger and somewhat 

 cylindric shape, and that it seems to be rather widely spread 

 in Argentine territory. 



I have seen numerous specimens from eastern Brazil : Para 

 (Dr. Hubbard, A. N. S.; J. B. Steere, U. S. N. M.; and 

 others) ; coast of Ceara (Fred Baker, A. N. S. P.) ; Fortaleza, 

 Ceara (von Ihering, in U. S. N. M.) ; Brazil (labeled P. ob- 

 longa, apparently in the hand of Paz, U. S. N. M.). They 

 vary from light brown to a faintly brownish corneous, and 

 differ from typical G. servilis by often (but not always) hav- 

 ing the basal fold very small or even wanting, as well as by 

 the usually paler color and the slightly fuller outlines of the 

 spire. Two examples measure : 



