52 NEW-YORK FAUNA — MOLLUSCA. 
Pura ARMIFERA. 
Pupa armifera. Say, Jour. Acad. Nat. Sciences, Vol. 2, p. 162. 
Pode tee Govtp, Bost. Jour. Nat. History, Vol. 3, p. 401. 
Poy pide Apams, American Journal of Science, Vol. 40, p. 271. 
Description. Shell oblong-oval, or somewhat obtusely fusiform. Suture distinct. Whorls 
six, obsoletely wrinkled. Aperture longitudinally subovate. Lip reflected but not flattened, 
interrupted above by the penultimate whorl, and with five teeth, of which the superior, and 
that which precedes the basal one, are smallest. Pillar-lip with an undulated lamelliform 
tooth ; its anterior extremity little elevated, but elongated so as almost to join the superior 
extremity of the exterior lip. 
Height, 0°2 nearly. 
Var. a. The two smaller teeth obsolete. 
Var. 8. The basal tooth obsolete. 
This species has been found at Crownpoint in this State, and ranges westwardly to 
Missouri. 
Pura SIMPLEX. 
PLATE XXXVI. FIG. 347. 
Pupa simplex. Gouxp, Bost. Jour. Nat. Hist. Vol. 3, p. 403, pl. 3, fig.21. In. Invertebrata of Massachusetts, p. 190, fig. 123. 
Description. Shell minute ; two-thirds of the shell cylindrical, surmounted by a rapidly 
formed blunt apex, smooth. Whorls five, moderately convex, quite smooth, separated by a 
distinct suture. Aperture circular, except for a small section from the posterior portion, 
which is cut off by the encroachment of the preceding whorl. Lip simple and sharp, slightly 
everted on the left side, and partially hiding a small umbilicus. No trace of a tooth. 
Color. Light chesnut. 
Diameter, 0°02. Height, 0°05. 
This appears to be a rare species, observed in Massachusetts, and first described by Dr. 
Gould. 
(EXTRA-LIMITAL.) 
P. rupicola. (Say, Jour. Ac. Vol. 2, p. 163. P. procera, Gouxp, Jour. Bost. Soc. p. 481.) Shell 
minute, attenuated to an obtuse apex. Whorls six, glabrous; suture deeply impressed; pillar-lip 
bidentate; upper tooth lamelliform, emarginate in the middle; lower tooth placed on the columella, 
and nearly at right angles with the preceding; lip tridentate; teeth placed somewhat alternately 
with those of the pillar-lip. Color, white. Height, 0+1. Florida, 
