F.XPI.AXATION OF PLATE XL. 



L\'r,cEKAiirs rRoxims Timmey p. 424 



J~2. \'ii'ws of two incompIctL- sptcinitn^. (After \\ hithcM. ) 

 Mcrchaiitvillc clay- marl : Kcyl^ort. 

 3- An inc'jnipletc spcciiiKii ilhi-lrated by Whitfield. 



]l oiouali sand; Hohndcl. 

 4. \'ie\\' of an incomplete left valve. 



McrcliaiitviUc clay-inarl ; iwar laiiicsbiirg, (141). 

 S- \'iew of an incomplete right \'alve preserving the shell. 



MarsIialltoiK'ii cIay-iinii-1 ; near S:^\'dcsl^o;-,:, (17;^ 



Iniicek.mius sp. 



6. View of an incnmpletc left valve. 



Xaz-csiiil: marl: Crosswicks Crc<rk\ {147'). 



962 



