NO. I TWO SPECIES OF MARINE SHELLS FROM FLORIDA BARTSCH 3 



very long and spindle-shaped, somewhat sinuous and marked by incre- 

 mental lines and rather weak spiral threads. Aperture narrowly oval 

 in its major portion with a long, sinuous canal basally, the posterior 

 angle is acute, outer lip thin, rendered slightly denticulated by the 

 axial threads ; inner lip thin and appressed to the columella. 



This type, U.S.N.M. no. 472850, has 9.6 whorls and measures : 

 Length, 50.4 mm; greater diameter, 14.7 mm. 



I take pleasure in naming this for Mrs. Helen Vatikiotis. 



