V\ii. CXIA-III. - Euconrh.„-da Chierchwr (1. W. M..i.i,kk. - 1. Siiell seen Iroin the side o.: «» X. -• Shell see 

 froM, bel.nv. $: 'A X. :!. Posterior part of the shell seej, from outside, cj; l;i4 X- 4. Postcnor P;'^ « ^he shell 

 s..en rroni inskle. ^; 260 X. 5. Anterior p.rt of the shell seen from mside. o^ l.« X. 6 hhell seen fiom the si^c 

 ?; r,'. X. 7. Shell seen from below, ?; 64 X. 8. Posterior part of the shell seen from inside. ?; 260 X 9, An tenor 

 part of the shell seen from inside. ?: 134 X. 10. Upper lip and the left paragnate seen from the ^'de ?, 186 X. 

 11. Postero-ventral part of the upper lip seen from above, $: 834 X. (Fig. 3 from a speeimen from l.it. 42 9 IN., long. 

 i2"l,')' \V., tlie other figures from specimens from Cruz Hay, bt. Johns. ) 



