34 Buixetin 29 198 



by Professor Gabb without locality label further than Santo 

 Domingo. 



Terebra Berlinercz, n. sp. 

 Plate 4, Figures 7, 8 



Shell slender and graceful, tapering to an acute spire, volu- 

 tions rounded between the sub-sutural zones, which slightly con- 

 strict the shell. Whorls twelve to fourteen, the two nuclear 

 smooth, the third and fourth ornamented with transverse riblets. 

 The sub-sutural band begins to appear on the fifth and becomes 

 defined on the sixth and seventh whorls. Spiral lines appear 

 faintly on the fourth and fifth but do not become sharply de- 

 fined until the eighth whorl. The sculpturing of the species is 

 remarkably beautiful. It consists on all but the earliest whorls 

 of the sub-sutural, constricting band occupying about one-fifth 

 of the whorl and marked off by a narrow sulcus, below which are 

 eight to ten narrow, flat spiral bands. Some of these may be 

 sub-divided, forming many fine threads resulting in as many as 

 fourteen or more spirals of different widths instead of the more 

 typical eight or nine sub-equal spirals. Transverse sculpture of 

 many very fine riblets, about thirty-six on a whorl having a di- 

 ameter of 8 mm. ; but the riblets may become more crowded and 

 very close- set. Columella short, very sharply keeled at the back, 

 anterior canal deeply notched. Length 38, greatest diameter 

 9 mm. 



The species most closely resembling T. Berlinercs are T. 

 gatunensis Toula and T. cirrus Dall; but it can at once be dis- 

 criminated from these two species by its characteristically con- 

 vex whorls, constricting sub-sutural bands and much closer, finer, 

 and more delicate sculpture. 



This, perhaps the most exquisite of all the Santo Domingo 

 Tertiary fossils is dedicated to the memory of Mrs. Sarah Berliner. 



Localities. — (Exp'd '16) Gravels, Rio Cana; Zones H and 

 I, Rio Cana, near Caimito. 



