﻿4 . Bulletin 21 122 



Description of Species 



Gastropoda 



Action luculi, n. s. 

 Plate, I fig. 1 

 Shell small, immature, three- whorled, the nucleus smooth, 

 the succeeding whorls sculptured with fine spiral striae. Aper- 

 ture oval, outer lip thin. When more specimens are obtained, 

 this may prove to be the young of the following species. 

 Length of shell 2, greatest width 1 mm. 

 Oak Grove, Santa Rosa County, Florida. 

 Mr. Aldrich's collection. 



Action hamadryados, n. s. 

 PI. I, fig. 2. 



Shell small, with an acute spire and tumid body-whorl, five- 

 whorled ; suture distinct, deeply channelled ; lower two-thirds 

 of the body-whorl ornamented with incised spiral lines which 

 tend to alternate in strength above and become much closer and 

 more sharply cut towards the base ; outer lip simple ; aperture 

 elliptical ; pillar with a moderately strong plait. Length of shell 

 4 , greatest width 2 mm. 



Oak Grove, Florida. 



Cornell University collection. 



Terebra calhounensis, n. s. 

 PI. I, fig. 3. 

 Shell of moderate but varying size ; largest specimen twelve 

 or thirteen-whorled ; spiral sculpture of a single groove incising 

 the upper portion of the whorls. This groove closely resembles 

 the suture, and with it and the included area forms a spiral band, 

 one to three millimeters wide. Transverse sculpture on the 

 earlier whorls of sharp, subequal, close-set riblets (much less" con- 

 spicuous but more irregularly ■ nodular on the sub-sutural bands 

 than on the remaining part of the whorls) ; on the later whorls 

 the riblets are progressively weaker, and become nearly obsolete 

 on the body- whorl. Length of largest specimen 65 , greatest 



