Proc,Ac.Nat.Sc.P}uliL,.1875 



Plate m 



^'^ 



T Smc]ajr&ain,litl!asaz 



W.G-.B-.del. 



LBeiixTexasiana,^^/: 5, Helrx. Hazardi,^/- 9 . Helix auriformis,^/; 

 2 . HelK Tro o stiana ,Le(i' 6 . lelix S ep t eiavolva,%iO . Helix Mo ore ana, 'W:(r.B. 

 3.Helixiivulifera,i^/fe^/. 7 Helix FelDigen,^^. 11. Helix fasHgans.^^/: 



