LIMN.EA. 



6T 



L.iiiinaE>n. ferrugiiiea, Haldeman. — Shell ovate-conic, tliin in tex- 

 ture and diaphanous, with four convex whirls, distinct suture, and well- 

 marked columellar fold ; aperture oval, about as long as the 

 spire ; labium appressed, ferruginous. 



Oregon : Mr. Nuttall. 



Closely allied to L. huniilis, but may be distinguished by the 

 want of an umbilic, and the well-defined fold on the columella. 

 (^Haldeman.) 



Lininwa ferruginea, Haldeman, Men. pt. Ill, p. 3 of cover 

 (1841), 49, pi. xiii, f. 19, 20 (1842).— DeKay, N. Y. Moll. 

 75 (1843). 



The above description and figure are copied from Haldeman. 



Fig. 110. 



Limncea 



ferruginea. 



Subgenus LEPTOLIMNEA, Swainson. 



Shell nearly cylindrical ; spire thick, lengthened ; aperture 

 small. 



H. & A. Adams use OmpMscola, Rafinesque, as the name of 

 this section. I protest against the use of the name in any other 

 sense than proposed by Rafinesque (see spurious species of Lim- 

 naea). Beck's section Omphiscola corresponds with Leptolimnea, 

 and he would be quoted as authority for it had he used a new name. 



Liimnaea kirtlandiana, Lea. — Shell turreted, thin, Fig. 111. 

 irregularly striate, pale horn-color, imperforate ; spire attenu- 

 ate ; sutures impressed ; whirls six, slightly convex ; aper- 

 ture narrow-elliptical. 



Habitat. Poland, Ohio: Dr. Kirtland. My cabinet, and 

 cabinets of Dr. Kirtland and T. G. Lea. Diam. .26, length 

 .70 of an inch. 



Many years since, Dr. Kirtland sent me several specimens Limncea 

 of this shell. I am not aware of its having yet been de- kirtlandiana. 



