THE NAUTILUS. 93 



long, and had evidently been washed into this habitat from 

 some region along shore. 



Oalba humilis modicella (Say). Found in two habitats, one a 

 lagoon among floating alga3 {Oedogonium) and the other in 

 Tuttle Brook, a tributary of Chittanango Creek, near the shore, 

 in a few inches of water among the algse Oedogonium and Cla- 

 dophora. In the latter the mollusks were very abundant craw- 

 ling on the shore at the margin of the water. 



SUCCINEIDAE. 



Succinea retusa Lea. Small specimens of this species were 

 very abundant along the shore at Becker's landing, crawling 

 over the rocks on the shore near the margin of the lake. 



The New York State College of Forestry, 

 Syracuse University. 



NEW LAND SHELLS FROM CALIFORNIA AND NEVADA. 



H. A. PILSBRY AND JAS. H. FERRISS. 



Epiphragmophora callistoderma n. sp. PI. 7, fig. 3. 



The shell is narrowly umbilicate, thin, cinnamon-brown, 

 fading on the base to tawny olive, having a chesnut-brown band 

 at the shoulder, with a wide border below and a narrow one 

 above of olive buff. Sculpture of inconspicuous growth- 

 wrinkles, and under the microscope, it is seen to be set with 

 rounded pustules in high relief (about 35 in a square mm. on 

 the upper part of the last whorl) ; they are rather irregularly 

 arranged, along the growth- wrinkles the surface between pustules 

 having very beautiful fine and close sculpture of wrinkles, 

 which are parallel in spiral bands on the shell, elsewhere ir- 

 regular and interrupted. This gives the shell a many-banded 

 appearance, in certain lights. 



Whorls nearly 5^, narrow and closely wound, the last rela- 

 tively very wide, broadly rounded peripherally, descending a 

 little in front. The aperture is large, oblique, margins but 

 slightly expanding, at the columella dilated partly over the um- 

 bilicus. Alt. 16, diam. 23 mm. oblique alt. of aperture 13, 

 width 14 mm. 



