THE NAUTILUS. 35 



mains of the snails that lived there, literally thousands of them. 

 It takes a fire such as this to bring to one's attention the enor- 

 mous abundance of snails at some localities. Many of the 

 specimens are badly burned but there would be no difficulty in 

 recognizing forms so distinct as Ephragmophor a fidelis and arrosa. 

 Of all the many thousands which I saw on August 28th, 1921 

 every one except three belonged to the latter species. The ex- 

 ceptions belonged to the E. californiensis complex, doubtless the 

 same as Edson recorded as E. nickliniana. A small strip of 

 ground aroung the northeast side was left unburned and this 

 was also searched without success for E. fidelis. 



E. arrosa here is exceptionally abundant. Some 200 speci- 

 mens were picked up incidentally during the search. Consid- 

 erable variation is noted in this large series. Some approximate 

 the size and shape of fidelis and the umbilicus is occasionally 

 almost closed as in that form. Moreover, numerous shells are 

 very dark as compared with the usual arrosa. But in no case 

 is the coloration and banding of fidelis approached, and the sur- 

 face sculpture in all specimens is positively that of arrosa. 



It must therefore be said that Gifford's record cannot be con- 

 firmed. If E. fidelis existed on San Mateo Point it was a very 

 small and inconspicuous colony which has now apparently dis- 

 appeared. It will be an interesting study in the distribution of 

 mollusks to learn how long it will take the several species to 

 repopulate the area from the small number of specimens left 

 living. 



Ariolimax californicus Cooper was found living on the Point. 

 It should be added to the list given by Edson. 



Museum, California Academy of Sciences. 



SOME LAND Sl'IAILS OF SHASTA CQTJITTY, CALIFORNIA. 



BY S. STILLMAN BERRY. 



During an automobile trip through northern California and 

 Oregon in the summer of 1920, that industrious collector, Allyn 

 G. Smith, managed to find time to stop by the way long enough 

 to unearth a few snails. Of particular interest is a small series 



