PLATE IV. 



Fig. 



48 Turbo Bidens Two-toothed Turbo. 



49 Turbo Petholatus Ribband Turbo. 



50 Nerita Virginea Guinea-hen Nerite. 



51 Nerita PHcata . . . .^ . . • Plaited Limpet. 



52 Haliotis Tuberculata • • • Common Ear Shell. 

 bS Haliotis Asinum Ass's Ear Shell. 



54 Haliotis Tuberculata • • • Outside view of fig. 52. 



55 Patella Perforata Perforated, or Key Hole 



Limpet. 



56 Patella Vulgata Common Limpet. 



57 Patella Fissura Cracked Limpet. 



58 Patella Chinensis Chinese-bonnet Limpet. 



59 Patella Equestris Cup-&-saucer Limpet. 



60 Dentalium Striatulum • • Striated-tooth Shell. 



61 Serpula Aquaria Watering-pot Serpula. 



62 Teredo Navalis Common Ship Worm. 



63 Sabella Belgica Granulated Sabella. 



Vy. .yi'Downll PrirUer, Pemberton Row, 

 Gough Square. 



