UNIV. CALIF. PUBL. 200L. VOL. 20 



[REES] PLATE 33 



,lV, /; 



■%. 



■:SMV: .•.•ji-i'.V. . * 





%-^^M.y J 



"^'^'/^..f.*^ 



.-vT' 





.■S?" 



r 



^w- 

 ^ 



v: 



r-"^. 



■3 *' 





^ 





■i"^ 



.s^^ 



„.*S'" 





s^ 



^^ 



..^%*. 



I- 



'^'%f«^^^fe|^^«'•^■^^^ 



^miy* 



/ 



^"^ 



S-' 



X 



^^'^''' K 



