Fig. CXLVIII. — Euconchoecia Chierchiae G. W. MiiLLEn. — 1. Shell seen from the side, (J; 64 X. 2. Shell seen 

 from below, (J; 54 X. 3. Posterior pari of the shell seen from outside, <^; 134 X. 4. Posterior part of the shell 

 seen from inside. (J; 260 X. 5. Anterior part of the shell seen from inside, (J; 134 X. 6. Shell seen from the side, 

 ?; 64 X. 7. Shell seen from below, ?: 64 X. 8. Posterior part of the shell seen from inside, $; 260 X. 9. Anterior 

 part of the shell seen from inside, $; 134 X. 10. Upper lip and the left paragnate seen from the side, ?; 186 X. 

 11. Postero-ventral part of the upper lip seen from above, 3; 834 X- {Fig. 3 from a specimen from lat. 42 " 9' N., long. 

 42° 15' \V., the other figures from specimens from Cruz Bay, St. Johns.) 



