TERTIARY MOLLUSCA. 123 



Elmira cornu-arietis, new species. 

 (Plate 5, Figures 9 a-c.) 



The following is a description of this species: 



Shell corniform, imperforate, thin, rapidly increasing in size, with 2 evenly 

 convex rapidly descending whorls; suture deeply impressed; aperture entire, 

 circular; inner lip and part of the convex base concealed by a thin callus; 

 surface malleated and with obscure broad revolving grooves crossed by 

 rugose, undulating growth-lines. 



Axial elevation, 32 mm. ; diameter, 34 mm. 



As the shell is broken away at the apex, the apparent fewness of 

 volutions may be due, in part, to the obliteration of the sutural impres- 

 sions in the asphalt of which the cast is composed. 



Locality. — Angela Elmira asphalt mine, near Bejucal, Cuba, stations 

 3652, 5312. 



Geologic horizon. — Oligocene? 



Type.—U. S. Nat. Mus. No. 167036. 



Ampullina anguillana, new species. 

 (Plate 4, Figures 9 a, b.) 



The following is a description of this species : 



Shell globose, of about 5J whorls, striated in accordance with the lines of 

 growth at intervals on the body-whorl of about 0.6 mm.; spire low; base 

 covered with a broad, convex callus. 



Alt., 43 mm.; diam., 42.5 mm. 



This shell resembles A. fischeri Dall, which has a flatter and pro- 

 portionately much narrower callus. The shape of the whorls and the 

 elevation of the spire are about as in A. fischeri. 



Localities. — Crocus Bay, Anguilla, station 6965 (type), 6966, 6893?, 

 6894, Vaughan, collector; also in the form of casts at Consolacion del 

 Sur, Cuba, station 3474, the Alcalde, collector. 



Geologic horizon. — Oligocene. 



Type.—U. S. Nat. Mus. No. 167021. 



Ampullina (?), indeterminate species. 



An indeterminable cast. 



Locality. — Between Colombier Point and bay next to St. Jean Bay, 

 St. Bartholomew, station 68976, Vaughan. 

 Geologic horizon. — Upper Eocene. 



Ampullina (Ampullinopsis) spenceri, new species. 

 (Plate 5, Figures 1-3.) 



The following is a description of this species: 



Shell large, thick, of about 7 whorls; the entire body-whorl, except the base 

 and sutural channel, ornamented with close, evenly spaced, indistinct, 

 impressed punctate revolving lines, visible only on well-preserved specimens; 

 apex small, pointed; spire moderately low; suture deeply excavated; whorls 

 angulated at the sutural channel; greatest convexity below the middle of the 

 whorl; base flat or slightly convex, separated from the remainder of the body- 



