NO. 2 PYRAMIDELLID MOLLUSKS — BARTSCH 65 



which makes the lateral outline of the spire appear almost as a straight 

 line. The sculpture of the first postnuclear whorl is indistinct; the 

 rest are marked by strong vertical axial ribs, of which 14 are present 

 upon the second, 16 upon the third, 18 upon the fourth, and 21 upon 

 the last turn. These ribs are a little wider than the intercostal spaces. 

 The spiral sculpture consists of four subequal cords whose junction 

 with the axial ribs produce almost hemispherical nodules. The cord 

 at the summit and its neighbor slightly shoulder the whorls. The 

 space enclosed by the axial ribs and spiral cords form deeply im- 

 pressed round pits. The suture is deeply impressed and rendered 

 wavy by the nodules at the summit of the whorls. The periphery 

 is deeply grooved and crossed by the continuations of the axial ribs, 

 which extend to the first basal spiral cord. The base is hemispherical 

 and marked by five subequal spiral cords, the first of which, below 

 the periphery, is strongly elevated and weakly nodulose ; the rest are 

 less strongly elevated with scarcely an indication of nodules. They 

 are separated by equally wide spiral grooves. The aperture is ovate; 

 the columella is oblique, slightly reflected, and bears a strong internal 

 fold at its insertion ; the parietal wall is covered by a strong callus ; 

 the outer lip is gently curved and rendered wavy by the external 

 spiral cords. 



The type, U.S.N.M. No. 561702, comes from the Pliocene of North 

 St. Petersburg, Fla. It has 5.5 postnuclear whorls and measures : 

 Length 2.5 mm., diameter 1.2 mm. An additional specimen is in the 

 collection of the A.N.S.P. 



I take pleasure in naming this species for Dr. Julia Gardner, of the 

 U. S. Geological Survey. 



CHRYSALLIDA HARRISI, new species 



Plate IS, figure 12 



Shell elongate-ovate, rather large, cream-yellow. The nucleus 

 consists of about 2 small whorls that form a moderately elevated 

 spire, whose axis is at right angles to that of the succeeding turns, 

 in the first of which it is about half immersed. The postnuclear 

 whorls are slightly rounded and slopingly shouldered from the second 

 spiral cord to the summit. They are marked by very strong, slightly 

 protractively slanting axial ribs, of which 12 are present upon the 

 second and third, 14 upon the fourth, 15 upon the fifth, and 16 upon 

 the last whorl. These ribs pass equally strong from the summit to 

 the first basal spiral cord. The four spiral cords are equally strong 

 and equally spaced. The first is at the summit. The junction of the 



