lf*l-^l Mirharl: Snyifia califdriiicri from San Diego L'cgion 115 



TABLE 8 

 Correlation between Number of Anterior Teeth and Length of Animal 



Table 8 shows that the gfreater number of teetli is possessed 

 only by the larger animals. Furthermore, when the upper ' ' row ' ' 

 of the table is expressed in percentages of the total population 

 of each "column" (see numbers in brackets), it is evident that 

 the smaller number of teeth is associated with the shorter animals. 

 j\roreover, when all these percentages are examined the following 

 facts relative to the number of teeth possessed by the majority 

 of animals are apparent : 



These facts show that the histogram (text tig. 1) is approxi- 

 mately true only for animals over, but not under. 22 mm. in 

 length. 



NuMBEE OF Posterior Teeth. — The number of posterior 

 teeth varies from 4 to 16 in animals varying from 9.5 to 26 mm. 

 in length. The accompanying histogram shows that no indi- 



