Description of six new species of Fossil Shells from the 

 Tertiary of Maryland and JVew Jersey. 



THE shells here described, are from that part of the Ter 

 tiary mass called by Mr Lyell the older Pliocene Period. 

 They are presumed to be new, and their descriptions are 

 presented as a small contribution towards the elucidation 

 of that part of our Geology. 



BALANUS. Bruguiere. 



Balanus Finchil* Plate 6. Fig. 222. 



Description. Shell short, conico-cylindrical, smooth, 

 nearly erect ; substance of the shell rather thick ; aper 

 ture nearly square ; valves rather pointed above. 



Length 5-20ths, Breadth .3, of an inch. 



St Mary s, Maryland. John Finch. 



Observations. Although this shell has no striking 

 character, it cannot be placed with any species I am 

 acquainted with. I am under obligations to Mr Finch, 

 for this and many other species from St Mary s. He very 

 kindly placed them in my cabinet, shortly after his return 



y Named after the geologist to whom 1 am indebted for the specimen 



