88 



Bulletin 39 



961 



inner lip not strongly calloused. Lenght up to 

 45 mm. O. mancinella^ n. sp. 

 BB. Spire shorter, about 1-4 of the length of the 

 shell; inner lip usually strongly callused. 

 Length about 40 mm. 



O testacea var. costaricensis, n. var. 



Oliva Cylindrica Sowerby Plate 7, figure I 



Oliva cylindrica Sowerby, 1849, Quart Jour. Geol. Soc. Ivondou, vol. 

 6, p. 45- 



Oliva reticularis Guppy, 1866, Quart. Journ. Geol. Soc. Londori, vol. 



22, p. 288,. Not of Lamarck. 

 Oliva cylijidrica Gabb, 1873, Trans. Amer. Phil. Soc, vol. 15, p. 



215- 



Oliva cylindrica Guppj,-, 1876, Quart. Journ. Geol. Soc. London, vol. 

 32, p. 526. 



Oliva cylindrica Dall, 1903, Trans. Wagner Free Inst. Sci., vol. 3, pt. 

 6, p. 1583- 



Oliva cyli7:drica Cossmann, 1913, Journ. de Conchyliologie, vol. 61, p. 



57, Pl. 5, ngs. 2, 3. 

 Oliva cylindrica Maury, Bull. Amer. Pal., vol. 5, p. 231, pl. 10, figs. 



14, 14a. 



A single, large specimen from Costa Rica, is doubtfully re- 

 ferred to this Dominican Miocene fossil. It differs from the more 

 common brevispira by its larger size and longer, more conic 

 spire. This shell is also closely related to the recent O. araneosa 

 Lamarck of the West Coast. 



Length 47, diameter 19 mm. 



Gatun Stage: Upper Gatun beds, i mile south of shore, alon :; 

 Old Man Sam Creek, C. R. 



Oliva brevispira Gabb Plate 7, figures 2, 3, 4 



Oliva bi'-evispira Gabb, 1873, Trans. Amer. Phil. Soc, vol. 15, p. 



215- 



Oliva brevispira Maury, 1917, Bull. Amer. Pal., vol. 5 p. 232, pl. 10, 

 figs. 16, 17. 



