﻿1 6 Bulletin 21 134 



Length of shell 9 ; greatest width 4.75 mm. 



Oligocene of the Chipola marls, Bailey's Ferry, Flotida. 



Cornell University collection. 



Marginella dentiadatoides, n. s. 

 . PI. IV, fig. 4. 



Shell long and slender, fusiform, apex acute; suture not 

 concealed by callus ; whorls four ; terminal varix narrow, sharply 

 defined ; outer lip with four or five denticles within ; columella 

 with four strong plaits. Length of shell 8 ; of aperture 4 ; 

 greatest width 3.5 mm. 



This speeies is of the same size and has the general aspect of 

 M. denticulata Conrad but is much more slender, and thus resem- 

 bles also M. aureocincta Stearns. 



Oak Grove, Santa Rosa County, Florida. 



Mr. Aldrich's collection. 



Persicula calhoiinensis, n. s 

 PI. IV, fig. 5. 



Shell rather small, stout, oval, highly polished ; spire so de- 

 pressed as to appear quite flat, volutions hidden by a wash of 

 callus ; body-whorl shouldered ; aperture extending the whole 

 length of the shell ; outer lip thickened at the margin, finely ser- 

 rate within ; inner lip with a callus terminated by a bordering 

 ridge, and bearing five plaits of which the three posterior are 

 horizontal and feeble, the anterior oblique and strong. Length 

 of shell 5.5 ; greatest width 4 mm. 



Chipola Oligocene, Bailey's Ferry, Florida. 



Cornell University collection. 



Persicula dry ados, n. s. 

 PI. IV, fig. 6. 

 Shell small, oval, spire depressed and involute, in adult shells- 

 covered with callus so as to conceal entirely the volutions ; aper- 

 ture extending nearly the length of the shell ; outer lip very 

 finely crenulate along the entire inner margin ; pillar washed 

 over with callus, with four or five plaits of which the posterior 



