120 Marine Shells of the Western Coast of Florida 



Turbonllla-"9 puiiicea Dall PI. 23, fig. 158 



Alt., 7-(S mm. Shell pale waxen-buff at tip, deepening to clear 

 red-brown on body whorl; shape slender, elongate-conic; nuclear 

 whorls transverse; 12 or 13 whorls, slightly and evenly convex; 

 sutures narrow, incised; 16 to 18 strong, nearly vertical ribs, almost 

 obsolete on body whorl; interspaces about width of ribs, with fine, 

 closely placed spiral striations; aperture entire, columellar lip 

 thickened. 



Moderate depths on sand and mud bottoms. 



Tnrboiiilla iiicisa-i<' constricta Bush PI. 23, fig. 159 



Alt., 6-8 mm. Shell waxen-buff, spire almost unicolored, dark 

 band over lower portion of whorls; shape slender, elongate-conic; 

 one and a half smooth nuclear whorls tilted obliquely to vertical axis; 

 ten flattened convex whorls; postnuclear whorl with fine, close verti- 

 cal threads; next whorl shows stronger threads with beginning defi- 

 nition of interspaces; succeeding eight whorls show increasing 

 strength of ribs and intercostal striations; about 25 ribs on body 

 whorl. With magnification, the intercostal striation is seen to con- 

 sist of six to eight flattened cords which do not cross the ribs and 

 which are separated by excavated interspaces of almost equal width. 

 Aperture typical. 



Found with T. ■punicea and other Turbonillas of moderate depth 

 range. 



Genus PERTSTK'HIA Dall. 1889 



Peristiohia-" toreta Dall PI. 23. fig. 160 



Alt., 10.5 mm. Shell white or yellowish, elongate-conic; two 

 smooth, glassy nuclear whorls tilted more than transversely from 

 vertical axis; 13 slightly convex whorls with strong, beaded, spiral 

 sculpture; sutures distinct, wide, with a fine, undulating thread 

 above the middle. Each whorl shows above the suture a roundly 

 beaded spiral cord, above this cord is an interspace of almost equal 



-^^ Lat., puniceus, red, purple. 



-^•^ Lat., incisus, cut; constrictus, drawn together. 



-^^ Gr., peri, around; stickos, a row or line. 



