112 GEOLOGY AND PALEONTOLOGY OF THE WEST INDIES. 



raised threads which increase in number and decrease in relative size on the 

 body whorl; base of whorl to end of canal covered with flat threads; canal 

 short, straight; inner lip smooth, with a thin deposit of callus; outer lip thin, 

 broken, with no traces of internal lirse, but inner surface of shell very minutely, 

 closely, spirally lined; aperture broad, semilunate. 



Alt. of smaller fragment, spire lacking, 12.5 mm.; diam. of body whorl, 

 9.5 mm.; alt. of larger specimen, end of canal lacking, 17.4 mm.; diam. of body 

 whorl, 13.5 mm. 



The larger of the two specimens of this species has lost nearly all of 

 the superficial layers of shell from the whorls of the spire, which have 

 thus acquired an unnatural rotundity. The tip of the spire of the 

 smaller shell is broken, but the lower whorls show the shape and sculp- 

 ture very well. 



Owing to the absence of the protoconch and nepionic whorls, it is 

 impossible to determine with certainty the precise generic relation- 

 ships of this shell. It appears rather close to Levifusus, to which I have 

 provisionally referred it, but is less acutely carinate and tuberculate 

 than the type of that genus and appears to have a broader aperture and 

 a shorter canal. 



Locality. Angela Elrnira asphalt mine, near Bejucal, Cuba, station 

 3652, Wiebusch. 



Geologic horizon. Oligocene? asphalt beds. 



Type.U. S. Nat. Mus., No. 166957. 



Epitonium (Sthenorhytis) antiguense (Brown). 

 (Plate 1, Figure 8.) 



Scala (Sthenorhytis) antiguensis Brown, Proc. Acad. Nat. Sci. Phila., p. 612, plate 20, fig. 9, 

 1913. 



The following is the original description of this species: 



"Shell turbinate, of about five whorls, rapidly enlarging; the suture 

 impressed, whorls rounded, crossed by about sixteen varices which are acute 

 edged and rise abruptly from the whorl. The intervarical spaces are crossed 

 by five raised revolving cords with a secondary sculpture of fine, somewhat 

 irregularly spaced revolving lines and crossed by radial lines parallel to the 

 varices. This secondary sculpture which covers the varices also, is best 

 observed with a lens. From the excavated form of the base of the shell, it is 

 probable that the mouth was circular, but this portion of the shell is imperfect. 

 Alt. 30 mm., diam. 19 mm. From the Hodge's Hill limestone (Antigua forma- 

 tion), Hodge's Bay, Antigua. Oligocene." 



This species probably has more than 5 whorls, but from the single 

 specimen at hand, a crushed fragment of 3 whorls, it is impossible to 

 determine the number. The varices are curved gently away from the 

 mouth. 



Locality. Upper bed at Hodge's Hill, station 6861, Vaughan. 



Geological horizon. Oligocene? 



Type. Philadelphia Academy, No. 1645. 



Figured specimen. U. S. Nat. Mus., No. 166958. 



