334 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4th Ser. 



swollen and very thin, so that they looked almost membranous. 

 The fruit passes through the intestine unchanged except in 

 color, which fades from green to a light yellow. The tortoises 

 seem to prefer this food to cactus, for there was an abundance 

 of the latter all around. The tortoises taken at this particular 

 place seem to be much fatter than any taken thus far, and their 

 shells are very light for their size. 



July 27, 1906. — Stewart says the plant with the apple-like 

 fruit is Hippomane mancinella. 



