TERTIARY MOLLUSC A. 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, 6.) 



The following is a description of this species : 



Shell globose, of about 5| 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 Ball, 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- 



