PLATE 256. 



Fig. 2. 



Fig. 3. 



Fig. 1. The. QnalKUig or Little-uecked Clam, Feijas ma-cennrid. Fig. 3. The Guper Clam of the West Coast, Srhizolh aru-i iml- 



Naniral sizi'. talH (Coarad). 



Vii- o Tl,.> (In.il.nnn- ..fPiio-ot Slnnnil «<r ri^?,!!)) 1/ 9 niitlnlli H) Specimen of oiilinary size, niluced ah.nit i.iii-t'oiirtli in leuj;lli- 



i IG. ^. Uie Cinaliaiis ot 1 nget SsOUUU, ^axidomm mitmili. v siphon.s are somewliat contracted; the foot (F) expands 



Natural size of large specimen. Drawn Ijy J. H. Emerton. about as usual 



(11.) Outline of the ielt valve of a larger specimen, redueetl to the 

 same extent. Drawn from nature liy E. E. C. Steams. 



