1921] NATURAL SCIENCES OF PHILADELPHIA. 349 



Length 34, diam. 18 mm. 

 Length 33.3, diam. 15.6 mm. 



Phos metuloides Dall, Proc. U. S. Nat. Mus., xix, p. 310, pi. 28, 

 fig. 15, from Ponton, Santo Domingo, was not obtained by Gabb, 



Phos gabbi Dall. 



Fhos vcrnguensis Gabb, Trans. Amer. Philos. Soc. xv, 1873, p. 212. (Not 



Hinds.). 

 Phos gabbi Dall, Proc. U. S. Nat. Mus. xix, 310, pi. 29. fig. 4. 1896. 



Though undoubtedly distinct, this species is closely related to 

 P. moorei Guppy, from the beds at Bowden, Jamaica. 



Phos elegans CUippy. 



Phos elegans Guppy, Quart. Journ. Geol. Soc. xxii, 1866, p. 290. pi. 16, fig. 11. 



Numerous specimens referable to this species were found asso- 

 ciated with the specimens labeled veraguensU by Gabb. 



Phos guppyi Gabb. Plate XXII, figs. 16, 17, 18. 



Phos guppyi Gabb, Trans. Amer. Philos. Soc. xv, 1873, p. 212. 



The few longitudinal costae and numerous fine revolving raised 

 Hues distinguish this species.- The sculpture of the neanic stage 

 is sometimes continued in the adult, as in fig. 18. 



Length 38, diam. 17.4 mm. (Type fig. 17). 



Length 33.4, diam. 15 mm. (Fig. 16). 



Type no. 3243 A. N. S. P. 



Phos (Strongyloceraj costatus Gabb. Plate XXII, figs. 10, 14. 



Phos costatus Gabb, Trans. Amer, Philos. Soc. xv, 1873, p. 212. 



Phos fasciolatus Dall, Proc. U. S. Nat. Mus. xix, 311, pi. 28, fig. 12, 1896. 



The number of longitudinal folds on the last whorl varies from 

 8-12. Dall 's P. fasciolatus from the Oligocene at Potrero, Rio Amina, 

 Santo Domingo, is a form or variety of costatus characterized by 

 having 14 somewhat narrower ribs, but entirely similar in other re- 

 spects. 



Length 31 mm., greatest diam. 17 mm. 



Type no. 3242 A. N. S. P. 



Metula cancellata Gabb. Plate XXII, flgs. 19, 20. 



Metula cancellata Gabb, Tr. Am. Philos. Soc. xv., 1873, p. 205. 



There are two specimens of this exquisite species, the larger one 

 (type) measuring, length 24.5, diam. 8 mm., aperture 13.3 mm. It 

 has lost the embryonic whorls. 



Type no. 3244 A. N. S. P. 



