18 THE NAUTILUS. 



Punctum conspectum, Bland, found in large numbers around the 

 roots of the Eucalyptus trees on the east side. 



Zonitoides minuscula, Binney, found at the roots of the Eucalyp- 

 tus trees. 



Mr. E. W. Gifford 1 reported finding Epiphragmophora Jidelis, 

 Gray, at San Mateo Point, but I regard this as erroneous as the 

 farthest south it is known is the form infumata, Gould, found as 

 far south as Santa Rosa. As there is no land connection between 

 there and San Mateo Point, the only explanation would be that 

 they were washed into the bay on a log or a tree and drifted to the 

 point ; but this is highly improbable, as they would have to stand 

 immersion in the salt water for many days, and I am positive that it 

 does not occur there now, so it is quite probable that he mistook one 

 of the light forms of Epiphragmophora arrosa, Gld., tor Jidelis, Gray. 



NOTES ON OREOHELIX. 



BY L. E. DANIELS. 



During the fall of 1909 in company with J. H. Ferriss, I collected 

 snails in the Kaibab Mountains and the Grand Canyon of the Colo- 

 rado. Oreohelix strigosa depressa Ckll. was the most abundant 

 species north of the canyon, 0. yavapai Pils., on the south side. 



A few notes may be of interest to the readers of THE NAUTILUS. 



Oreohelix is viviparous, and when cleaning the shells if I observed 

 one that was gravid I made note of the number and color of the 

 embryos. 



The first Oreohelix s. depressa collected was on August 28th on 

 Powell Plateau, and when cleaned nearly one-third were found to be 

 gravid, with from four to eight young in each shell, the young con- 

 sisting of from one and one-half to two and one-half whorls ; all of 

 the adult shells were brown with dark bands, and the young were all 

 brown. Very few of the embryonic shells show bands and then only 

 a faint trace. 



The last station, Spectacle Cove in the Grand Canyon, was col- 

 lected on October 23d, the number taken was 456 0. yavapai. 

 Only ten were gravid, or one in forty-five. Six of these contained 

 two, three contained three and one four embryos. This lot was 



1 NAUTILUS, XIV, page 144, 1901. 



