xi 
* 
" 
inhabiting the United States. 709 ga *- 
B. umbilicus open. 
/ *** Aperture without teeth. 
18. HELIX NUTTALLIANA. —— mes 
Plate XII. 
H. testà sub-conicà, subtus convexA, umbilicata, tenuiter striata ; 
colore superné luted aut fused, subtus castaned; anfractibus septem, 
fascia nigra aut castaned cinctis; apertura sibrotundt depremi 
intus fasciata ; labro sub-reflexo ; ; columella le 
_ Synonyms AND REFERENCES. : down "1 
Helix Nuttalliana, tod Trans: Am. Phil. si VI. 
88. 2: XXIL, fig- 74. i 
SR ` Dascnreros. ; i 
Animal. Not hhithesto noticed. . 
Shell. Sub-conical ; poe light: iiiv or 
brownish on the upper einai, with a black or chest- 
nut-colored band revolving from the spire to. the 
lip, the lower. surface dark chestnut; suture 
nct, impressed ; whorls seven, rounded, spirally 
com with minute, delicate lines, the stris of in- 
crease very distinct; lip reflected below, simple 
above; aperture ovate ; wmbilicus open; a little con- 
tráted by the reflection of the lip; base flattened, 
convex. 
Greatest transverse diameter neatly c one and a half 
inches. - 
GEOGRAPHICAL Distrisution. Inhabits the Ore- 
gon Territory from Fort Vancouver to the ocean, 
VOL. III. —-NO. II. AT 
