714 CRETACEOUS PALEONTOLOGY. 



Formation and locality. ? Cliff wood clay, Cliff wood Point 

 (185) ; Woodbury clay, near Matawan (103), deep well-boring, 

 Mount Laurel (Johnson). 



Geographic distribution. New Jersey. 



Anchura solitaria Whitfield. 

 Plate LXXXL, Fig. 6. 



1892. Anchura solitaria Whitf., Pal. N. J., vol. 2 (Monog. U. S. 



G. S., vol. 18), p. 117, pi. 14, fig. 9. 

 1905. Anchura solitaria Johns., Proc. Accad. Nat. Sci. Phil. 



(1905), p. 22. 



Description. Shell small, with an elevated spire of about six 

 volutions, the dimensions of a very perfect specimen being: 

 total height, from end of anterior canal to tip of spire, 32 mm. ; 

 height of spire, 15 mm.; diameter of outer volution, n mm. 

 Outer volution produced anteriorly into a rather long, slender 

 anterior canal; the outer lip produced postero-laterally into a 

 long, slender slightly curved, spine-like process. The volutions 

 of the spire moderately and regularly convex, with moderately 

 impressed sutures, marked by narrow, rounded, vertical nodes 

 which extend from suture to suture, from 16 to 20 being pres- 

 ent on each volution ; upon the outer volution the vertical nodes 

 extend only about one-third of the length of the volution below 

 the suture, and at their base, towards the aperture, a revolving 

 angle is gradually developed which continues into the spine- 

 like lateral extension of the aperture. 



Remarks. This species was originally described from a very 

 imperfect specimen in which the anterior canal and the extension 

 of the aperture were not preserved. The description here pub- 

 lished has been drawn up from a very complete specimen in the 

 recent collections of the Survey. Some impressions of the ex- 

 terior of the shell show, in addition to the characters enumerated 

 above, that the outer volution is nearly smooth for a distance 

 below the revolving angular ridge, and then below this smooth 

 area it is marked by rather fine revolving costse; the entire sur- 

 face of the shell is marked by very fine revolving striae. 



