AURIS-EUDOLICHOTIS. 115 



much speckled and mottled. Whorls 5. Lower two-thirds of the 

 outer lip thikened within ; parietal wall in adult specimens covered 

 with a heavy white callus. 



Alt. 33, diam. 17 mill. 



Alt. 37, diam. 18* mill. 



Island of Grenada (Swift). 



Bulimus glabra PFR., Conchyl. Cab., p. 42, pi. 13, f. 7. Pelecy- 

 chilus glabra BINNEY, Ann. N. Y. Acad. Sci., iii, p. 114, pi. x. f. j 

 (jaw and dentition). Plekocheilus glaber var. grenadensis GUPPY, 

 Ann. Mag. N. H., (4), i, p. 436 (1868). 



This seems to me fairly recognizable as an insular race, although 

 I have but ten specimens of it before me. 



A. LACERTA Pfeiffer. PI. 41, figs. 40, 41. 



Shell rimate-umbilicate, long-ovate, rather thin or somewhat solid. 

 Yellowish-white, with obliquely longitudinal brown stripes, either 

 regular, undulating or somewhat dislocated. Surface wrinkle- 

 striate, broken into diamond-granules on the last whorl. Whorls 5, 

 somewhat convex, the last but little or not all compressed behind 

 the lip, having some impressed transverse lines there but no pit or 

 constriction ; base but little pinched. 



Aperture somewhat over half the alt., oblong, striped within, 

 hardly contracted in the middle. Peristome well reflexed, with re- 

 curved edge, white, the outer lip slightly thickened within near the 

 middle and below; basal lip recurved, narrowly rounded ; columellar 

 lip wide, with a strong, spirally ascending white callous fold above, 

 seated on a dark base. Parietal wall bearing a thin translucent 

 film. 



Alt. 34, diam. 16 mill. 



Alt. 33, diam. 14 mill. 



Para, Brazil. 



Bulimus lacerta PFR., P. Z. S., 1855, p. 94, pi. 31, f. 15 ; Novit. 

 Conch., i, p. 64, pi. 18, f. 5, 6 ; Monogr., iv, p. 442 ; vi, 78. 



This is another form very closely allied to A. glabra. It is smaller 

 and thinner, with thinner lip, more regular granulation and striping, 

 and especially differs in the abrupt curve of the lip above, which 

 at the upper insertion lies nearly at a right angle with the 

 outer lip. A. aurissciuri has the base more pinched and the aperture 

 more prolonged at base. There is not much variation in the dozen 

 specimens before me from Para. 



