10 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I25 



and less oblique than the othef two ; outer lip reinforced at irregular 

 intervals by short internal lirations. 



The type, U.S.N.M. No. 561593, comes from the Pliocene deposit 

 of North St. Petersburg, Fla. It has 7.5 whorls remaining, having 

 lost about the 6 first postnuclear turns, and measures: Length, 

 10 mm.; diameter 4.5 mm. U.S.N.M. No. 561594 contains a tip, 

 having the nucleus and 8.5 postnuclear whorls, which measures: 

 Length 6 mm. ; diameter 2.2 mm. Two additional specimens from the 

 same source are in the A.N.S.P. collection. 



The species is named for Archie Pogue Cales, the discoverer of the 

 North St. Petersburg Pliocene deposits. 



Subgenus Longchaeus Morch 



Shell elongate-turrited, not umbilicate, having three columellar 

 folds, a basal fasciole, and peripheral sulcus. The entire surface is 

 marked by fine lines of growth and microscopic spiral striations. 



Type : Pyramidella punctata Schubert and Wagner. 



LONGCHAEUS (LONGCHAEUS) MARIONAE, new species 

 Plate I, figures 2, 3 



Shell elongate-conic, turrited, cream-yellow. The nucleus consists 

 of about 2 depressed helicoid whorls 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 flattened and increased regu- 

 larly in size. They have the summit feebly minutely crenulated and 

 the periphery deeply sulcate, the posterior edge of the sulcus being 

 slightly thickened. The suture of the whorls is rendered decidedly 

 channeled, since the summit of succeeding whorls falls anterior to 

 the peripheral sulcus of the preceding turn and not infrequently lets 

 the anterior edge of the sulcus appear as a spiral thread in the suture. 

 The surface of the whorls is marked by fine lines of growth, which 

 are a little more strongly developed in the sulcus than in the rest of 

 the surface. Base semiglobular in shape, with a weak fasciole at the 

 insertion of the stout columella, marked like the spire. Aperture 

 suboyate, outer lip fractured in all the specimens seen, provided with 

 three strong spiral lamellae within. Columella with three spiral 

 lamellae, of which the posterior near the insertion of the columella 

 is very broad, while the anterior two are much more oblique and less 

 strong. 



The type, U.S.N.M. No. 561 591, and a cotype tip were collected 

 by Mr. Fargo at the Pliocene deposit of North St. Petersburg, Fla. 



