Palfpont. N. ^'. VoJ. 'Z. 



mJLJLmTmm [&m©wiF„ 



PL .11 



( TRACKS OF GASTEROPODA 1 



-'■'^--rA ,i 



^ 



"*^. 



■•^. 



Zi 



^3r 



'■««2.;iLl. 



r 



r 



3 ' 



\^ 



Mrs. Hall del. 



Litli. (A H.H Pease, JUljatvy. 



