70 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I25 



CHRYSALLIDA WOODRINGI, new species 

 Plate 15, figure 9 



Shell large, stout, cream-yellow. The early whorls are decollated 

 in all our specimens. The sculpture of the remaining whorls is not 

 strongly developed. The axial ribs slant retractively and are much 

 wider than the spaces that separate them. Of these ribs i8 are present 

 upon the second of the remaining whorls, 24 upon the third, and 

 26 upon the last turn. The sculpture of the first whorl is ill defined. 

 The spiral sculpture consists of five low, broad cords, which are sepa- 

 rated by spaces about one-fourth as wide as the cords. The junction 

 of the axial ribs and spiral cords forms low, rounded tubercles, while 

 the spaces enclosed between them are shallow, more or less rounded 

 pits. The suture is moderately constricted and rendered wavy by the 

 tubercles at the summit of the whorls. The fifth spiral cord is not 

 quite so wide as those above it and is less strongly nodulose. The base 

 is strongly rounded and marked by six low, rounded spiral cords, 

 which grow consecutively less wide from the subperipheral cord basal- 

 ward. The narrow grooves separating the basal spiral cords are 

 crossed by numerous fine axial threads. The aperture is ovate, some- 

 what effuse at the junction of the columella and basal lip ; the colu- 

 mella is oblique and bears a strong fold at its insertion ; the parietal 

 wall is crossed by a moderately thick callus; the outer lip is gently 

 curved and rendered wavy by the external spiral cords. 



The type, U.S.N.M. No. 561709, comes from the Pliocene of North 

 St. Petersburg, Fla. It has 4.2 whorls remaining and measures: 

 Length 3.5 mm., diameter 1.3 mm. U.S.N.M. No. 561710 contains 

 another specimen from the same source, and an additional specimen 

 is in the collection of A.N.S.P. 



This species is nearest related to Chrysallida vaughani (below), 

 from which its much stouter outline will readily distinguish it. 



I take pleasure in naming this species for Dr. W. P. Woodring, 

 of the United States Geological Survey, whose exhaustive and 

 masterful report on the fauna of the Bowden beds of Jamaica gave 

 a new impetus to West Indian and tropical American paleontology. 



CHRYSALLIDA VAUGHANI, new species 



Plate 15, figure 2 



Shell large, slender, cream-yellow. The nuclear whorls are decol- 

 lated in the type. The postnuclear whorls are high and almost flat- 

 tened. They are crossed by not strongly developed axial ribs which 



