l6 TRANSACTIONS OF THE WAGNER FREE 



hatchie beds, Florida, Dall;? Miocene of Haiti (as C. bidentatd) Gabb and 

 Guppy, /. c. 



There appeared to be no ground for distinction between Guppy's shell and 

 the Floridian specimen. The latter approaches the recent C. bidentata Or- 

 bigny less closely. 



Genus UTRIOULUS Brown. 

 Subgenus TJtriculus s. s. 

 Through a typographical error in my list in the Bull. U. S. Nat. Mus., No. 

 37, p. 86, U. Goitldii and U. pertenuis were included in the subgenus Retusa, to 

 which they do not belong. 



Utriculus vaginatus n. s. 



Shell small, elongate ovate in profile, with a subtruncate spire above the 

 last whorl ; surface smooth or marked with incremental lines ; whorls three 

 or four ; spire depressed, barely visible above the last whorl ; suture narrow, 

 deeply excavated, the rim in front of it sharp ; last whorl descending toward 

 the aperture ; shell slightly wider in front than behind ; aperture very narrow 

 behind, more than three times as wide in front; outer lip simple sharp, round- 

 ing imperceptibly into the simple unplicate pillar, behind which there is no 

 umbilicus ; Ion. 4.0 ; lat. 2.0 mm. 



This is a very well marked species, recalling in miniature the U. Mayoi of 

 the New England coast. The latter, however, though the suture is deep, has 

 it relatively shallower than in the fossil species, and the margin in front of the 

 suture is rounded over. In U. vaginatus it is as sharp as in an Olivella. Two 

 specimens were obtained from the silex-beds at Ballast Point, Tampa Bay. 



Subgenus Retusa Brown. 



Retusa sulcata Orbigny. 



Bulla stdcata Orb. Moll. Cuba, I. p. 129, pi. iv. bis, figs. 1-12, 1841. 

 Retnsa sulcata Dall, Bull. U. S. Nat. Mus. No. 37, p. 86, 18S9. 



Caloosahatchie beds, one specimen. Recent on the coast from Cape Hat- 

 teras southward to Santa Lucia, West Indies. 



I may add here that Volvula cylindrica Gabb (1873), from the Santo Do- 

 mingo Miocene, and V. oxytata Bush, from the recent fauna near Cape Hat- 

 teras, are one and the same species. 



Family SCAPHANDRID^. 



Genus SCAPHANDER Montfort. 



Section Bucconia Dall. 



Shell differing from the typical Scaphander (^S . iignarins) in having no ridge 



or carina around a sunken vertex, in having (as it were) a posterior pillar 



extended backward and supporting an expansion of the outer lip, and in its 



globose instead of pyriform outline. 



