NO. 2 PYRAMIDELLID MOLLUSKS — BARTSCH II 



The type has lost about the first 4 postnuclear turns; the 10.5 re- 

 maining whorls measure: Length 11.2 mm., diameter 3.1 mm. The 

 tip has the nucleus and 10 postnuclear whorls, and measures : Length 

 6.2 mm., diameter 2.5 mm. U.S.N.M. No. 561592 contains 4 speci- 

 mens from the same source, and 12 additional specimens have been 

 sent to the A.N.S.P. 



The specific name is dedicated to Mr. Locklin's wife, Marion, who 

 is an able student of mollusks. 



KEY TO THE PYRAMIDELLIDAE WITH BIPLICATE COLUMELLA 



Outer lip reinforced by internal spiral cords Locklinia 



Outer lip not reinforced by internal spiral cords. 



Aperture subquadrate Eulimella 



Aperture oval ( Cossmannica) 



LOCKLINIA, new genus 



Shell elongate-turrited, whorls flattened with microscopic lines of 

 growth; columella biplicate; outer lip reinforced with internal spiral 

 cords. 



Type: Locklinia fargoi, new species. 



KEY TO THE SPECIES OF LOCKLINIA 



Summit of the whorls without spiral cord. 



Shell large jargoi 



Shell small pliocena 



Summit of the whorls with spiral cord ornata 



LOCKLINIA FARGOI, new species 



Plate 2, figure 8 



Shell elongate-turrited, large, polished, cream-yellow. Nuclear 

 whorls 2.5, helicoid, with well-roimded turns, having their axis at 

 right angles to those of the succeeding whorls, in the first of which 

 they are about one-third immersed. The postnuclear whorls are flat- 

 tened and marked by weak lines of growth only. Suture well im- 

 pressed. Periphery well rounded. Base well rounded, without 

 sculpture. Aperture obliquely oval, with the parietal wall covered 

 by a moderately strong callus, the columella bearing two folds, of 

 which the posterior at the insertion of the columella is much stronger 

 than the anterior, which is also much more oblique; the outer lip is 

 provided with four spiral lamellae within. 



