38 BUI.I.ETIN 39 ^''^^ 



Terebra gausapata Brown and Pilsbry Plate I, figures 8, lo 



Terebra gausapata Brown and Pilsbry, April 191 1, Proc. Acad. Nat. 



Sci. Pliila. , vol. 63, p. 340, pi. 22, figs. S, 9. 

 Terebra acuaria Toula, Dec. 191 1, Jalinb. der K-K Geol. B-eichanstalt, 



vol. 61, p. 19, pi. 2, fig. 19. 



Terebra [Myurella) acuaria Cossm., 1913, Journ. de Conchyliologie, 

 vol. 61, p. 12, pi. I, figs. 19-24. 



The T. gausapata, v/as described by Brown and Pilsbry, 

 from young specimens, measuring only 19 mm in length. Later 

 in the same year appeared Toula' s T. acuaria, also based on 

 young shells. 



The important characters of this species, are its nearly 

 straight ribs, deep sulcus, a sutural band with faint spirals 

 and even sculpture. Figures 23 and 24 of Cossmann I believe 

 represents wolfgangi. T. ivolfgangi as v^dll be noted from the 

 accompanying figures is a much more slender species and usually 

 with a smooth sutural band. The pillar carries two broad folds, 

 which are better developed than in wolfgangi or gatunensis. 



Length 33, breadth 8.5 mm. 



Gatun Stage: Mt. Hope, C. Z. 

 Water Cay. 



Terebra spirifera Dall Plate i, figure 13 



Terebra dislocata Gabb, 1873, Trans. Amer. Phil. Sci., vol. 15, p. 225, 

 Not of Say. 



Terebra {Acus) bipartita Sowerby, variety spirifera Dall, 1895, Proc. 

 U. S. Nat. Mus., vol. 18, p. 38. 



Terebra {Oxynieris) bipartita Sowerby, variety spirifera Dall, 1903, 

 Trans. Wagner Free Inst. Sci., vol. 3, pt. 6, p. 1632, pi. 59, fig. 13. 



Terebra spirifera Maury, 1917, Bull, Amer. Pal., vol. 5, p. 188, pi. 3 

 figs. 15, 16. 



In T. Gatunensis and wolfgangi the pillar is nearly smooth 



