I k; paleontology of new jersey. 



striction are neither iiii'iired nor mentioned. Still, Ji species constructed 

 according to liis li^-ure and description would scarcely tail to possess them. 

 On the New Jersey s[)eciniens they are very conspicuous, while in all other 

 features the specimens correspond well. 



There is much \ariation among' the different individuals before me, 

 especially in the comparative increase in the diameter of the shell in pro- 

 portion to its length, to the amount of nearly or quite one-fourth of the 

 whole diameter; also in the proportional strengtli and size of the nodes 

 above the sutural l)and and in the strength of the spiral lines. 



The aperture of the shell is narrow and elongated and equal to more 

 than one-third of the entire length of the shell. The outer lip appears to 

 have been thickened, although all the specimens are too imjierfect for posi- 

 tive statement. The inner lip has a decided callus at its upper end, while 

 the notch is distinct but not deep. The longitudinal plicae are nearly verti- 

 cal and on the body whorl extend to near the lower end. The spiral lines 

 are numerous and mark the entire volution below the sutural band, but are 

 often stronger on the lower part than above. 



Formation and locality: All the specimens of this shell observed from 

 New Jersey are from the gray sandy Miocene marls at Jericho, and belong 

 to the collections of the National Museum. 



DrILLIA SUBFLEXUOSA 11. sp. 

 Plate XXI, tigs. 5-7. 



Shell small, slender, rather thick, with a, turreted spire which forms 

 about three-fifths of the entire length. Whorls convex, obliquely plicated, 

 constricted above; constriction concave, forming about one-thii'd of the 

 exposed part of tlie \'olution. Plications very distinct and rounded, not 

 extending Vielow the middle of the jirincipal volution. Aperture about one- 

 third the length of the shell, narrow, terminating below in a short narrow 

 canal; outer lip thickened, distinctly striated within, and deeply notched at 

 the upper extremity; ('olumellar lip callous at the upper end, striated below, 

 and bent near the lower end. Surface marked by strong, elevated, spiral 

 lines marking all the shell except the concave constriction at the upper side 

 of the volution. 



