TERTIARY MOLLUSCA. HI 



our specimen; the growth lines, unlike those of T. albida, are not 

 prominent; the notch coincides in position with the middle thread. 



It may not be out of place to remark here that Pleurotoma cochlearis 

 Conrad, from Vicksburg, Mississippi, which has been placed in the 

 synonymy of Turns albida by several writers, is clearly distinct from 

 that species and probably belongs to a different section. Although 

 the sculpture of the mature whorls is so similar that decollated speci- 

 mens can scarcely be distinguished from T. albida, the protoconchs of 

 the two are unlike. 



Locality. — Crocus Bay, Anguilla, station 6894, Vaughan. 



Geologic horizon. — Oligocene. 



Oliva species. 

 (Plate 1, Figure 1.) 



In the lower bed at Crocus Bay, Anguilla, occur two species of Oliva, 

 one of which is figured. It is a plump, low-spired shell with a thick 

 aperture. The other is higher spired and proportionately more slender. 

 Locality. — Crocus Bay, Anguilla, station 6965, Vaughan. 

 Geologic horizon. — Oligocene. 

 Figured specimen. — U. S. Nat. Mus., No. 166953. 

 Lyria vaughani, new species. 

 (Plate 1, Figure 4.) 

 The following is a description of this species : 



Shell volutiform, spire high; nucleus small, succeeded by 5 whorls with high 

 narrow axial costse, about 9 on the body whorl, near the anterior extremity of 

 which are several oblique threads; aperture wide, about two-thirds the length 

 of the shell; pillar lip with 3 basal folds and apparently several indistinct folds 

 and an elliptical node at the posterior end; anterior canal short, with an 

 oblique fasciole. 



Alt. 22; diam. 12.5; alt. of body whorl 15 mm. 



This species resembles Lyria musicina Heilprin, but is smaller, has 

 a smaller nucleus, sharper and closer ribs, fewer columellar folds, and 

 more prominent basal fasciole. 



Locality. — Crocus Bay, Anguilla, station 6965, Vaughan. 



Geologic horizon. — Oligocene. 



Type.—U. S. Nat. Mus., No. 166955. 



Levifusus? angelicus, new species. 

 (Plate 1, Figures 2, 3 a, b.) 



The following is a description of this species: 



Shell thin, rapidly expanding; spire low; whorls about 4J, shouldered, with 

 narrow axial costs, about 16 to the whorl, extending from suture to suture 

 on the spiral whorls but obsolete on the body whorl or reduced to low nodes 

 on the carina; shoulder with many faint, simple, revolving threads and, near 

 the suture, one stronger thread forming nodes at the intersections witn tne 

 axial ribs; periphery of whorls nearly cylindrical, set with 5 or more strong, 



