50 



BuivLETlN 39 



Conus grasiozonaius Guppy Plate 3, fig. 15 



Comis granozonatns Guppy, 1866, Jaur. Geol. Soc, London, vol. 22, p. 

 287, pL 16, fig. 5. ^ 



This is a rare species in Costa Rica, our collection containing 

 only a single specimen from the Gatun beds of the Rio Blanco. 

 It is characterized by a rather high, conic spire, with smooth or 

 only slightly coronated vv^horls. The last whorl has about 18, 

 wide, spiral bands, which are heavily granulated above. The 

 specimen agrees well with Guppy' s figure of the Jamaican 

 sheli. 



Length 25, breadth 11 mm. 



Gahrn Stage: Rio Blanco, C. R. 



Conus planillratus Sowerby Plate 3, figures 10, 13 



Conus p'aiiilii-atus vSowerby, 1849, Quart. Jour. Geol. Soc. London, vol, 

 6, p. 44. 



Co7ins planiliratiis Guppy, 1S66, [de)n. vol. 22, p. 287, pi. 16, fig- 

 ure 7, 



Conus p'laniliratus Gabb, 1873, Trans. Amer. Phil. Soc, p. 230, in 

 part. 



Conus planiliratus Guppy, 1876, Quart. Jour. Geol. Soc. London, vol. 

 32, p. 528. 



Conus planiliratus Dall, Trans. Wagner Free Inst. Sci., vol. 3, pt. 6, 

 P- ^583. 



Conns planiliratus Cossmann, Jour, de Concliyliologie, vol. 61, p. 48, 



pi. 3, figs. 25, 26, 27. 

 Conus regularis (^abb. Jour. Acad. Nat. Sci. Phila., vol. 8, 2nd series, 



P- 359» ph 46, figs. 45-48. Not of Sowerby. 

 Conus planiliratus Maury, Bull. Amer. Pal., vol. 5, p. 209, pi. 7, 



fig. 10. 



The occurrence of this species in Costa Rica is limited to 

 tlie coral limestones of Limon, Gabb had specimens from here 

 which he identified with the recent West Coast Comis 7-rgulaTis 

 of Sowerby. The Limon shells agree very well with Guppy' s 

 figure in the Quarter!}^ journal and with Cossmann's figures of 

 Eowden and Mindi specimens. The species appears to be closely 



