66 



Proceedings of the Biological Society of Washington. 



17 Cont. 



It is perhaps worthy of note that the left side seems to be somewhat 

 higher in number of scale rows than the right. This is especially notice- 

 able in bilaterally assymetrical specimens. Possibly this may be correlated 

 with the assymetry of the lungs, the left being usually the only func- 

 tional one. A summary of the variations in dorsal scale rows follows : 



No. Rows 9 



I. 23-25-23-21-19 1 



II. 2.3-25-23-21-19-17 1 



(Ila. 21-23-25-23-21-19-17) none 



III. 23-21-19-17 3 



IV. 21-23-21-19-17 6 

 Intermediate (bilaterally assymetrical) 10 



" between I and II (mother) 1 



II and Ila 2 



Ila and IV 3 



II and III 4 



II and IV — 



III and IV 1 



c? 



none 

 2 



6 



2 



1 

 1 



70 



3 



3 



none 



15.5 



37.5 



40.6 



6 

 9 

 12 

 3 

 6 



