EXPLANATION OF PLATE. 



PLATE XXII-MOLLUSCA. 



Figs. 1, la.— NAT1CA SIMULANS, E. A. Smith. 

 Natica simulans, E. A. Smith, Aim. Mag, Nat. Hist. (7), 

 Vol. XVIII, p. 173 (1906). 



Figs. 2, Za.— COLUMBELLA SUAVIS, E. A. Smith. 

 Columbella suavis, E. A. Smith, op. cit., p. 171. 



Figs. 3, 3a.— TROPHON (BOREOTROPHON) PLANI- 

 SPINA, E. A. Smith. 



Trophon (Boreotrophon) planispina, E. A. Smith, op. cit., p. 16E 



