PLATE XXVII 



Fig, 



38. 



Fig. 



39. 



Fig. 



40. 



Fig. 



41. 



Fig. 



42. 





42 a. 



Fig, 



43. 





43 a. 





43 J. 





43 c. 



Fig. 



44. 





11 a. 





44 6. 



Fig. 



45. 



Fig. 



47. 



Urosyca catjdata. Natural size. 



Neverita globosa. Magnified. 



Ampullina striata. Magnified. 



Terebra Calieornica. Magnified. 



Pugxellus hamulus. Natural size. 



Front view of an old and very heavily incrusted individual. 



Lateral view of the same. 



Cypr^a (Luponia) Bayerquei. Side view. 

 Top view. 

 View of the hase. 

 A young specimen from Tejon. 



Cypr^a (Epona) Matiiewsonii. Magnified. Top view. 

 Side view. 

 View of the base. 



Anchura transversa. Magnified. 

 Helicaulax bicarinata. Natural size. 



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164 



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