CEPHALOPODA— ORTHOCHOANITES. 



Large; septa distant (nearly three inches apart on venter of 

 adult), lateral nodes narrow and deep, lateral saddles high. 

 Jerseyan of New Jersey. 



143. H. tuomei Clark and Martin. (Fig. 1342.) Eocenic. 



Fig. 1342. Hercoglossa hwfnei, X M- (Md. Survey.) 



Slightly umbilicate with wide aperture, narrowing rapidly; 

 venter narrowly rounded; sides flattened; lateral lobes and saddles 

 moderate, rounded; ventral saddle broad. 



Nanjemoy and Aquia formations of Maryland, Virginia, etc. 



144. H. (Enclimatoceras) ulrichi (White). (Fig. 1343.) Eocenic. 



Fig. 1343. Hercoglossa [Enclimatoceras) ulrichi, X t*^* (After White. ) 



