ART. UO ADDITIONAL MOLLUSKS FEOM ECUADOR BARTSCH 11 



ing the middle of the base, and by six equal and equally spaced in- 

 cised spiral lines. Aperture oval, posterior anjL^le acute; outer lip 

 thin showing the external sculpture within; inner lip slightly curved 

 and reflected over and appressed to the base for about half of its 

 length ; parietal w^all covered by a thin callus. 



The type (Cat. No. 30:3083, U.S.N.M.) has six and one-half post- 

 nuclear whorls and measures, length 4 mm.; diameter, 1.1 mm. 



TURBONILLA (MORMULA) INCA, new species 

 riate 2, fig. 5 



>Shell elongate-conic, milk-white. Nuclear whorls decollated. 

 Postnuclear whorls appressed at the summit, marked by low, 

 rounded almost vertical axial ribs, of which 22 occur upon the first 

 three of the remaining turns, 24 upon the fourth, 20 upon the fifth, 

 while on the last turn the axial ribs become quite obsolete. Inter- 

 costal spaces about as wide as the ribs, marked by a rather conspicu- 

 ous series of pits halfway between the summit and the suture, and 

 another at the periphery, and numerous line incised spiral lines 

 between the summit and the median line of pits, and between the 

 median and peripheral line. Suture rendered sinuous by the axial 

 ribs. Periphery well rounded. Base moderately long, well rounded, 

 marked by the continuations of the axial ribs which evanesce after 

 passing the middle of the base, and a number of rather strong incised 

 spiral lines. Aperture moderately large; posterior angle acute; 

 outer lip reinforced within by five strong spiral lamellae; inner lip 

 rather stout, reflected over and appressed to the base for two-thirds 

 of its length, and provided with an oblique fold at its insertion; 

 parietal wall covered by a rather thick callus. 



The type (Cat. No. 303084, U.S.N.M.) has lost the nucleus and 

 probably the first postnuclear whorl. The seven and a half whorls 

 remaining measure, length, 4.7 mm.; diameter, 1.4 mm. 



TURBONILLA (ASMUNDA) CHUBLV.. new species 



Plate 3, fig. 5 



Sheil moderately large, elongate-turreted, Avhite. The nucleus and 

 probably the first postnuclear whorls decollated. Postnuclear 

 whorls tabulated at the shoulder, almost flattened, marked by strong, 

 distantly spaced very slightly protractively slanting axial ribs, of 

 which 12 occur upon the first of the remaining turns, 14 upon the 

 second, 16 upon the third to fifth, and 18 upon the last turn. The 

 intercostal spaces are about twice as wide as the ribs, and well im- 

 pressed. Periphery angulated. Base short, well rounded, marked 

 by the continuation of the axial ribs and a median rather strong 

 spiral cord. Aperture subquadrate; posterior angle obtuse; outer 



