﻿143 Florida Oligocene Shells 25 



Murex Virginia;, n. s. 

 PI. VI, fig. 5. 



Shell small with some resemblance to Typhis, trigonal, 

 bieonic ; whorls six ; the two later being sharply carinated at the 

 shoulders. Varices six, the alternate three being much more 

 pronounced and giving the shell its triangular form. Spiral 

 sculpture of raised threads which on the last whorl alternate with 

 one or two finer, intercalated lines. Fainter, longitudinal threads 

 form with the spirals a fine cancellation on the last whorl. 

 Aperture oval, slightly more than half the length of the shell ; 

 canal narrow, reflexed. Length of shell 15 ; greatest width 8 

 mm. 



This shell recalls M. shilohensis Heilprin from the Miocene of 

 Shiloh, New Jersey, but that species has eight sub-equal varices. 

 The variety Burn si of s/iiio/iensis has six varices like the Chipola 

 shell but they are very much more prominent. 



Chipola marls, Bailey's Ferry, Florida. 



Cornell University collection. 



Murex Vaughani, n. s. 

 PI. VI, fig. 6. 



Shell small, pyriform, compact, resembling in shape young 

 specimens of M. messorius Sowerby of the Pliocene and recent 

 faunas. Whorls about six, the nuclear nearly smooth, the three 

 later whorls bearing each seven varices. On the body whorl the 

 varices are prominent, rounded, somewhat broader than the inter- 

 spaces. The varices of the shell form nearly continuous, sinuous 

 lines' from near the apex to the base of the canal. Spiral sculp- 

 ture of raised lines of which groups of two or three are much 

 stronger and stand out prominently from among alternating 

 feebler spirals. Outer lip with about ten strong internal lirae ; 

 aperture oval ; canal not quite half the length of the shell. 

 Length of the shell 22.5 ; greatest width 14 mm. 



Chipola marls, Bailey's Ferry, Florida. 



Cornell University collection. 



Named in honor of Mr. T. W. Vaughan of the United States 



