66 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I25 



axial ribs and spiral cords forms strong, oval nodules, whose long 

 axis coincides with the spiral cords. The spaces enclosed by the axial 

 ribs and spiral cords are deeply impressed elongate pits. The suture 

 is strongly constricted and rendered wavy by the tubercles at the 

 summit of the whorls. The periphery of the last whorl is marked by 

 a spiral cord that is not quite as strong as those above it; it is ren- 

 dered weakly nodulose by the continuations of the axial ribs. The 

 base is rather long, strongly rounded and marked by four rather 

 broad, low, equally spaced spiral cords, which are feebly nodulose. 

 The aperture is broadly oval ; the columella is slightly curved and 

 slightly reflected, and bears a strong fold at its insertion ; the parietal 

 wall is covered by a thick callus; the outer lip is gently curved and 

 rendered wavy by the external spiral cords; the junction of the basal 

 lip and columella forms almost a right angle. 



The type, U.S.N.M. No. 561703, comes from the Pliocene of North 

 St. Petersburg, Fla. It has 6.5 postnuclear whorls and measures: 

 Length 3.9 mm., diameter 1.2 mm. 



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

 from which its much larger size will readily distinguish it. 



I take pleasure in naming this species for Prof. G. D. Harris, of 

 Cornell University, who has not only contributed much to our knowl- 

 edge of southeastern American geology but also has trained a host 

 of students to continue his researches. He is also the founder of the 

 Paleontological Research Institution at Cornell University. 



CHRYSALLIDA PALMERAE, new species 

 Plate 15, figure 4 



Shell elongate-ovate, small, cream-yellow. The nuclear whorls are 

 deeply obliquely immersed in the first postnuclear turn, above which 

 the rounded, tilted edge of the last turn only projects. The postnuclear 

 whorls are slightly rounded and marked by very strong, retractively 

 slanting axial ribs, of which 14 occur upon the second, 15 upon the 

 third, 16 upon the fourth, and 17 upon the last postnuclear turn. 

 These ribs extend equally strong from the summit to the peripheral 

 spiral cord. Four equally strong and equally spaced spiral cords mark 

 the whorls, the first being at the summit. The junction of the axial 

 ribs and spiral cords forms strong, oblong tubercles, whose long axis 

 corresponds with the spiral cords. The spaces enclosed by the spiral 

 cords and axial ribs are deep, slightly oblong pits. The suture is 

 strongly constricted and rendered wavy by the strong tubercles at 

 the summit of the whorls. The periphery is marked by a strong spiral 



