PLATE XXIX. 



Pccien bowdcnensis Dall, exterior of left or flat valve ; lat. 36 mm. ; p. 713 



Pcctcn ocalamis Dall, left valve ; lat. 36 mm. ; p. 756. 



Pecien Ga^fo' Dall, right valve ; lat. 53 mm. ; p. 717. 



Pecte7i IVzUcoxu Dsdl, right valve ; alt. 19 mm. ; p. 737. 



Pecten eboreus var. se?iescens Dall, left valve ; lat. 63 mm. ; p. 751. 



Pecten opuntia Dall, left valve ; alt. 33 mm. ; p. 707. 



Pinna qiiadrata Dall, external view of anterior portion of internal cast ; 



56 mm. ; p. 660. 

 Pecten subventricosus Dall, left valve ; lat. 63 mm. ; p. 707. 

 Pecten chipolanics Dall ; lat. 25.5 mm. ; left valve ; p. 733. 

 Pecten Raveneli Dall, right or convex valve ; lat. 48 mm. ; p. 721. 

 Atrina Harrisii Dall, exterior of decorticated right valve ; alt. 150 mm. ; p. 

 Pecten ca/oosaensis Dall, right valve ; alt. 64 mm. ; p. 731. 



924 



