PLATE 3 . 



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Fig. 3o. 



4.5 OPKN 9.40™ l6.1 OTEN 20.5 OPEN 4.6 STOPPED 9.4. STOPPED 16 . 1 STOPPED 2 0. 5 STOPPED 



U.^f?4 





-ftt^. ^ J. Johnson . Zondorv j July i8q6. 



Jos<j>}i Shr.ltoTt jodp. 



