NO. 2 NEW TURRITID MOLLUSKS BARTSCH 25 



LEPTODRILLIA LORIA, n. sp. 



Plate 7, figs. I, 3, 4 



Shell small, elongate-conic, vitreous, semitransliicent. Nuclear 

 whorls 1.5, well rounded, smooth. Postnuclear whorls moderately 

 well rounded, marked by rather strong, almost vertical axial ribs, 

 which become weak toward the summit and which attain their largest 

 development on the posterior third of the whorls. On the first post- 

 nuclear whorl these ribs are cusped ; on the later ones they become 

 less elevated. On the last whorl they extend but feebly across the base 

 and evanesce on the columella. These ribs are about two thirds as 

 wide as the spaces that separate them. Eight are present on the first, 

 and 10 on all but the last whorl, which has 12. In addition to the 

 axial ribs the whorls are marked by fine incremental lines on the spire 

 as well as the base. Suture well impressed. Periphery well rounded. 

 Base moderately long, well rounded. Spiral sculpture is absent on 

 the spire and base and present on the short, stout columella, which 

 is crossed by nine spiral threads. Aperture rather large, strongly 

 channeled anteriorly and posteriorly. The posterior sinus is deeply 

 notched and immediately below the summit. There is a slender strom- 

 boid notch a little posterior to the anterior termination of the outer 

 lip. The space between this and the posterior sinus is protracted into 

 a clawlike element. The inner lip is appressed to the columella as 

 a callus which extends up over the parietal wall, where it develops 

 into a conspicuous nodule near the posterior angle. 



Type. — U.S.N.M. no. 430701 dredged at station 106 in 150 to 195 

 fathoms between latitude i8°3i'2o" N., longitude 66°i6'3o" W., and 

 latitude i8°3i'3o" N., longitude 66°i8'2o" W. It has 7.5 whorls and 

 measures: Length, 6.8 mm; diameter, 2.5 mm. 



The present species dififers from Leptodrillia splendida in being in 

 every way smaller and in having a much smaller nucleus. 



SYNTOMODRILLIA Woodring 



Type species. — Syntomodrillia woodringi, new species = 6^. lisso- 

 tropis Woodring 1928, not Drillia lissotropis, Dall 1889. 



In 1928 Dr. Woodring described the genus Syntomodrillia,^ citing 

 Drillia lissotropis Dall as type. Dall in 1881 * described DrUlia lis- 

 sotropis as follows : 



Shell small, slender, somewhat bluntly tipped, with six whorls, shining with 

 the lustre of paraffine; nucleus rather large, bullate, smooth, translucent, shin- 



" Miocene mollusks from Bowden, Jamaica, pt. 2, pp. 160-161, 1928. 

 * Bull. Mus. Comp. Zool., pp. 58-59. 1881. 



