EXPLANATION OF PLATE. 



MOLLUSCA. 



PLATE IX. 

 Figs. 1, la.—Pleurotoma optata, E. A. Smith, Annals and 

 Magazine of Natural History, series 7, Vol. IV. October, 1899, p. 238, 



Figs. 2, 2a.—Pleurotonia oldhami, E. A. Smith, loc. admodum 

 cit. 



Figs. 3, 3a*—Pleurotoma (Surcula) breviplicata, E. A. Smith, 

 loc. admodum cit. 



Figs. & 9 ^La.—Pleurotoma (Surcula) eurina, E. A. Smith, torn, 

 cit., p. 239. 



Figs. 5 9 5a.—Pleurotoma (Surcula) ftraecipua, E. A. Smith, 

 loc. admodum cit. 



Figs. 6, 6a.—Pieurotoma (Surcula) arcana, E. A. Smith, loe. 

 admodum cit. 



