168 University of California Publications in Geology [Vol. 7 



SYLVILAGUS BACHMANI CINERASCENS (Allen) 



Of this more uncommon brush rabbit only three specimens 

 occur, portions of three right mandibles, with dentition. The 

 teeth of one are so broken that their true shape is indistinguish- 

 able, and those of the other two show that they belong to very 

 young individuals. The small size of all three makes them 

 referable to this form, which is the smallest species of the genus 

 found in this region. There seem to be some slight differences 

 in the shape of the teeth between the fossils and Recent speci- 

 mens of S. b. cinerascens, but this can be accounted for on the 

 ground that the fossil teeth are unworn. 



