319 Costa Rica Miocene — Ousson 47 



pyiHformis Reeve of the west coast of Central America but the 

 fossil shells have generally a lower and flatter spire. It is also 

 known from the Miocene of Santo Domingo, Jamaica and 

 Trinidad. 



Gatim Stage: Ba?ia?ia River, Hill No. j.. 

 Conys limonensis, n. sp. Plate 3, figures 7, 8 



Shell rather large, but delicate and rather slender; spire lovv', 

 concave to the slightly projecting apex; spire whorls 10 or more, 

 nearly flat between the sutures or slightly concave due to a 

 slightly raised border; spire-wliorls with 3 or 4 low spirals which 

 become faint on the later whorls so that they are nearly smooth; 

 sutures deep; shoulders of the last whorl angled or somewhat 

 raised; body-whorl long and slender, polished and smooth, ex- 

 cept for a few faint spirals near the tip of the canal; anterior 

 canal long and straight, evenly tapering. 

 Length 41, breadth 24 mm. 



This species is based on 2 specimens from the coral lime- 

 stones of Port lyinion, where it is associated with Conns stenosi- 

 omus and planiliratus. From stenostovnts, its straight canal, low 

 spire and nearly smooth, polished surface is most noticeable. 



Gatim Stage: Port Limon, C. R. 



Conns musaerssis, 11. sp. Plate i. figures 22, 24 



Shell small and solid; spire short, conic, composed of about 

 2 pellucid, globular and projecting whorls and 6 post-nuclear 

 whorls; the spire-whorls are flat or slighth^ caucave and project 

 slightly over the anterior sutures; body -whorl with the upper 

 half smooth, but with 12 deep grooves on the anterior canal 

 which produce wide, spiral bands: these grooves are delicately 

 incised by raised longitudinal lines; color markings are some- 

 times preserved, 'which appear as 8 li.-irrow, gray bands on the 

 upper half of the whorl. 



Length 19, breadth 9 iiini. 



This small species, the Gatim auaiogue of the reeerit West 



