^Makylaxd Gkological Survey 279 



The external impressions of two left valves apparently of this species 

 were found in the thin shales of Evitts Creek. The shells are small, 

 apparently thin, with length and height about equal, surface marked by 

 very fine concentric striae and one specimen in addition shows rather 

 indistinct concentric ridges. The valve with simply the fine striae is 

 quite near specimens of this species which the writer has collected in the 

 Hamilton beds of New York. 



Length, 8J mm.; height, 9 mm. 



Oecw/Tcrece.— EoMNEY Formation^ Hamilton' Member. East bank 

 Evitts Creek below Wolfe Mill. 



Collections. — ^laryland Geological Survey; New York State Museum. 



Superfamily SOLENACEA 

 Family SOLENIDAE 



Genus PALAEOSOLEN Hall 



Palaeosolen minutus n. sp. 

 Plate XXXIV, Fig. IS 



Description. — Shell solenoid and rather small; length three times the 

 height; basal and cardinal margins nearly parallel, the cardinal straight 

 and the basal slightly rounded toward the extremities; anterior end ap- 

 parently rounded; posterior extremity tnincate and probably gaping. 

 Valves somewhat convex their entire length; beaks subanterior and not 

 clearly defined ; umbonal slope marked by a very indistinct diagonal 

 groove. Surface anterior to the umbonal groove marked by fine concentric 

 striae while posterior to it the impression apparently shows indistinct 

 undulations. 



This species is apparently closely related to P. siliquoideus Hall but 

 differs from it in its much smaller size and greater proportionate height. 

 This specimen has only one-fifth the length and nearly one-half the height 

 of P. siliquoideus. 



Length, 13 mm.; height, 4-J mm. 



Ocnirrence. — Eomney Formation, Hamiltox Member. Williams 

 Eoad |- mile east of Queen City Hotel, Cumberland. 



Collection. — ^Maryland Geological Survev. 



