86 Bulletin 29 250 



Genus Phos Montfort 

 Phos Gabbii Dall 

 Plate 14, Figure 6 

 Phos Veraguensis Gabb (in part,) Trans, Amer. Phil. Soc, vol, 15, p. 



212, 1873. Not P. veraguensis Hinds. 

 Phos Gabbii Dall, Proc. U. S. Nat. Museum, vol. 19, No. 11 10, pp. 



310, 311, pi. 29, fig. 4, 1896. 

 Shell with twenty ribs on the • last whorl crossed by spiral 

 bands. Length 22, width 11 mm. 



Dr. Dall has kindly compared our shells with his type which 

 Bland collected at Potrero, Rio Amina. The shell also is found 

 at Bow den. 



Localities. — (Exp'd '16) Bluffs 2 and 3, Cercado de Mao. 



Phos Moorei Guppy 

 Plate 14, Figures 7, 8 

 Phos Veraguensis Moore, Quart. Jour. Geol. Soc. London, vol. 6, p. 



40 and 43, 1849. 

 Phos Moorei Guppy, Quart. Jour. Geol. Soc. London, vol. 22, p. 290, 



pi. 16. fig. 11, 1866. 

 Phos Veraguensis Gabb (in part) Trans. Amer. Phil. Soc, vol, 15, p. 



212, T873. Not P. veraguensis Hinds nor elegans Guppy. 

 Phos erectus Guppy, Geol. Mag., vol. 11, p. 410, pi. 16 fig. 1, 1874. 

 Phos Moorei Dall, Proc. U. S. Nat. Museum, vol. 19, No. 1110, pp. 



310, 311, 1896. 



This species is closely related to the recent West coast Phos 

 veraguensis as a comparison with specimens from Veragua proves. 

 P. gatunensis Toula appears to be the Isthmian analogue. 



We are indebted to Dr. Dall for comparing our shells with 

 Guppy' s Bowden type of P. Moorei. 



Localities. — (Exp'd '16) Zones E and F, (Common) Rio 

 Gurabo at Los Quemados. A shell from Bluff 1, Cercado de Mao 

 was identified by Dr. Dall as a mutation of this species. 



Phos elegans Guppy 

 Plate 14, Figure 10 

 Phos elegans Guppy, Quart. Jour. Geol. Soc. London, vol. 22, p. 290, 



pi. 16, fig. 13, 1866. 

 Phos Veraguensis Gabb (in part) Trans. Amer. Phil. Soc, vol. 15, p" 



