AMBER-SNAII.S. 129 



Succinea NiittaUiana, Lea, Nut-tal-li-an'-a. Whorls 

 somewhat more rounded than those of the last, and the 

 aperture wider in proportion to its length. Shell 

 light horn-colored, with distinct lines of growth, and 

 a little smaller than that of the last species. The 

 specimens were collected in Weber canon, Utah, but 

 it is said to occur also in California and Oregon. 



Succinea Sillimani^ Bland, Sil-li-man'-i. The spire 

 of this shell, which was gathered near Stockton, Cal- 

 ifornia, is extremely short, and the aperture is very 

 large and does not narrow near the base. The shell 

 is so ver}' thin that it is nearly transparent, and it has 

 but a trace of color. Its length is about half an inch. 



Siiccmea Oregonensis^ Lea, Or-e-go-nen'-sis. Shell 

 yellowish, spiral whorls few and well rounded, body 

 whorl wide, aperture a perfect oval. Ivcngth about 

 half an inch. From near Los Angeles, but found in 

 other parts of California and in Oregon. 



Succinea Gabbii^Txyon^ is somewhat smaller. Spec- 

 imens from Brigham City, Utah, are considered by 

 Mr. Binney as a variety of the last species. 



Succinea Stretchiana^ Bland, Strech-i-an^-a, has a 

 yellowish or greenish horn-colored shell, with few 

 whorls and a rounded aperture. The whole shell is 

 also quite full and rounded, and its length is less than 

 half an inch. It is a mountain species, the specimens 

 studied having been collected near Elko, Nevada. 



Fig. 119 shows the form of the little Succinea 

 azmra^ Say, a-va'-ra. The shell is horn-colored, and 

 very thin and delicate. The three spiral whorls 

 are rounded, the body-whorl of moderate size, 

 and the aperture is ovate. .The length is a 

 quarter of an inch or more. Specimens before 

 Fig. 119. me are from the Salmon River mountains of 



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