44 Bulletin ii 44 



but in the latter the lines of growth do not follow the curvature 

 of the ribs. Neither our nor Aldrich's figures show the feature 

 clearly. 



Localities. — Alabama : Gregg's landing ; Yellow bluff. 

 Types. — Aldrich's coUedlion. 



Specimen figured. — Gregg's landing; Paleont. Museum, Cor- 

 nell University. 



Exilia pergracilis, Con. 



See BulL Am. PaL, vol. i, p. 204. 



Aldrich finds this species at Nanafalia, (see Bull, i, Geo!, 

 Surv. Ala., p. 58), a Lignitic locality. This is one of the 

 specimens obtained by Conrad through Dr. Showalter and 

 labelled simply "Alabama," though the lot of fossils were said to 

 have come from a comparatively northern locality ; doubtless 

 this came from Matthews' landing. Heilprin, strangely enough, 

 had "Claiborne, Ala," put on the label. 



De Gregorio and Cossmann suggest the marked similarity or 

 even identity of this with Aldrich's Fasciolaria pergracilis. 

 With good specimens of both before me I must confess I can see 

 no similarity between these forms. Exilia has three embryonic 

 smooth whorls followed by the spiral whorls which are ribbed 

 longitudinally with a slight Pleurotomoid flexure not far below 

 the suture. Over these ribs pass fine, incised, revolving lines. 

 The ribs on the upper spirals of F. pergracilis are recftilinear and 

 perpendicular. The lower whorls possess broad, incised spirals, 

 across which vertical lines pass as in AHcBon. It also has 

 faint columellar plaits. 



Clavilithes kennedyanus, P. 5, fig. s. 



vSyn. Clavilithes kennedyanus Har., Proc. Acad. Nat. Sci. Phila., 1895, p. 

 73, pi. 7, fig. 8. 



Harris' original description. — "General form as figured; 

 whorls 10 or 12 ; i and 2 probably smooth ; 3-10 with nodular 

 ribs mo.st prominent on the lower portions of the whorls, crossed 



