400 Monograph of the Species of » 
ME 
to be a wide-spread species, and has been found in 
all the northern range of States, wherever it has 
been sought for. When fresh, it seems to be invested 
with a glutinous pubescence, by which particles of 
earth become entangled and partially conceal it. 
PUPA ARMIFERA. 
Plate III. fig. 10. 
P. testà grised, cylindraceA, obtusd; anfractibus sex planulatis; 
aperturà semiovali, dentibus quinque acm quorum unus meer 
natus labio, unus ad columellam affixu 
* Shell dextral, oblong-oval or somewhat mes 
fusiform ; suture distinct; whorls six, obsoletely 
wrinkled ; aperture longitudinally sub-ovate; exte- 
rior lip reflected, but not flattened, interrupted above 
by the penultimate whorl, and with five teeth, of 
which the superior one and that which precedes the 
basal one are smallest; labrum with an undulated 
lamelliform tooth, its anterior extremity little ele- 
vated, but elongated, so as almost.to join the superior 
extremity. of the exterior lip. 
" Length three twentieths of an inch. 
“ Very distinct from P. corticária;in being a much 
larger and proportionally more dilated shell, and, 
with that species, seems to belong more properly to 
the genus Cary'cuium of Müller and Férussac.” (Sax. 
Journ. Acad. Nat. Sc., II. 162.) 
Mr. Say found it in upper. Missouri. E" is very 
abundant in Ohio, but I have not heard of any speci- 
mens found on this side of the Alleghanies. 
He notices, that sometimes one and sometimes the 
