88 DESCRIPTION OF NEW 



Hab. Fort Vancouver, Oregon. Professor Nuttall. 



My Cabinet. 



Cabinet of Professor Nuttall. 



Diam. 1-1, Length -5 inches. 



Remarks. — Professor Nuttall informs me that this species is common 

 to the shores of the Columbia River. Young individuals very closely 

 resemble H. concava (Say). In the older specimens the lip will at 

 once distinguish it. The depression of the superior part of the outer 

 lip is a remarkable character. In the older specimens the inferior and 

 superior termination of the outer lip are joined by a remarkable callus. 



Hklix NuttaliLiana. Plate XXIII. fig. 74. 



Testd obtuso-conicd, subtus planulatct, umbilicatd, longitudinaliter minuth striatd, siipern^ 

 luted, infernh tenebroso-fuscd, proph carinam fasciald ; anfractibus septenis ; aperlurd subro- 

 tundala, intus fasciald; labro subreftexo ; columella losvi. 



Shell obtusely conical, beneath flattened, umbilicate, longitudinally and minutely 

 striate, above yellowish, below dark brown, near the carina banded ; whorls seven ; 

 aperture nearly round, banded within ; lip somewhat reflexed ; columella smooth. 



Hab. from Fort Vancouver down to the ocean, Oregon. Professor 

 Nuttall. 



My Cabinet. 



Cabinet of Professor Nuttall. 



Diam. 1.3, Length -8 inches. 



Remarks. — This may be considered to be the finest Helix found 

 within the territory of the United States. It has little resemblance to 

 any of our species yet known. It most resembles the H. solilaria, but 

 is rather larger than that species. I owe to the kindness of Professor 

 Nuttall two specimens — one is darker on the superior part than the 

 other, being brownish. The dark band about the middle of the whorl 

 is remarkable — above it are two indistinct bands. 



