47 Olssox, Neocene Fossils 



This Typhis is distinct from the other representatives of the 

 genus in the Tertiary. The species finds its closest related forms 

 in the Oligocene and Pliocene of the Floridian region. 



Florida ; Miocene of the upper bed at Alum Bluff. 



Pyrulajamesi, n. sp., Plate 5, Fig's 14-16 



Shell small, globose, moderately heavy; whorls about five in 

 number ; the last or body whorl large, inflated and covering a 

 little more than two-thirds of the preceding ; spire pointed ; sur- 

 face sculptured with plain raised revolving ribs, separated by 

 broader interspaces ; revolving ribs about 22 in number ; these 

 are regularly spaced on the body whorl but become smaller and 

 more irregular on the anterior canal ; suture bordered by one of 

 these ribs, and separated by a broader interspace than usual ; in- 

 terspaces with fine, raised and closely spaced lines which are par- 

 allel to the growth lines ; mouth large; canal slightly oblique; 

 columella more or less callous. 



Length of type 12, diameter 7.5 mm. 



Le?igth of the larger specimen 13.5, diameter 8.5 mm. 

 From the Maryland Miocene another species of this group 

 was described by Martin as Pyrula harrisi. This is a Calvert spe- 

 cies and characterized by its shorter spire, and much more nu- 

 merous finer, revolving ribs. 



Yorktoivn formation /fames river at Kingsmill. 



Solariella shack lefordensis, n. sp., Plates, Fig's 5,6 



Shell of medium size, pearly ; whorls about six in number ; 

 nucleus very small ; earlier whorls with two carinated ribs, one 

 at the angle, the other about the middle ; upper surface of whorl 

 smooth and with oblique wave-like undulations which cause the 

 granulation of the revolving ribs ; suture of the later whorls grad- 

 ually advancing down so that additional revolving ribs and lines 

 are brought to view ; on the body whorl a smaller faint revolving 

 line is introduced between the two carinated ribs; in addition 

 there are two plain ribs below the carinated ones, the lowermost 

 being the largest ; base of shell with about five revolving, plain 

 ribs ; umbilicus deep and bordered by a strongly carinated rib ; 



