215 



Costa Rico Miocknk — Olsson 



43 



Conus catenatus Guppy, 1876, Quart. Jour. Geol. Soc. London, vol. 32, 

 p. 527, in part b 



Coims stenostomus Dall, 190.3, Trans. Wagner Free Inst. Sci., vol. 3, 

 pt. 6, p. 1583. 



Conus stenostoinus Maury, 1917, Bull. Amer. Pal., vol. 5. p. 203, pi. 6, 

 fig. 4- 



A species characterized by its sharp angulated shoulder, 

 concave upper surface of its whorls and attenuated anterior can- 

 al. Well-preserved examples showing a highly polished sur- 

 face and traces of yellow blotches of color markings were col- 

 lected quite abundantly in the coralline of Port Limon. The 

 species also occurs in Jamaica and Santo Domingo, 



Gatun Stage: Port Limon. 



Conus COncavitectum Brown and Pilsbry 



Conus COncavitectum Brown and Pilsbry, 191 1. Proc. Acad. Nat. Sci, 



Phila., vol. 63, p. 341, pi. 23, figs. 5, 6. 

 Conus {Lichoconus) concavitectum Cossmann, 1813, Jour, de Conchy- 



liologie, vol. 61, p. 43, pi. 4, figs. 3, 4. 



In adult shells, the spire whorls become concave. The 

 species is also recognized by its sharp shoulder and low spire. 

 It may be confused with varieties of proteus but the sharp should- 

 er angle and spiralled spire whorls will separate it. Our speci- 

 mens come from Water Cay, and measure 48 by 27 mm. 



Gatun Stage: Canal Zone and Water Cay. 

 Conus proteus Hwass Plate 2, figures 3, 4 



Conus proteus Hwass, 1789, Enc. Meth. vers, i pt. 2, p. 682. 

 Conus leoninus Hwass 1789, Enc. Meth. vers, i pt. 2, p. 683. 

 Conus proteus f Gabb, 1873, Trans, Amer. Phil. Soc, vol. 15, p. 232. 

 ? Conus Berg hausii ? Gabb, Idem, p. 232. Not of Hoernes, Foss. Wien. 



Beck. pi. I, fig. 3. 

 Conus leoninus Gabb, 1881, Jour. Acad. Nat. Sci. Phila., vol. 8, 2nd 



series, p. 359. 



