140 Journal of the Mitchell Society [February 



One specimen found on Fiver's Island. The writer suspects that this is a mu- 

 tation of O. seminuda but must suspend judgment until more extensive 

 collecting has been done in this region. 

 Odostomia {Chrysallida) seminuda C. B. Adams. S C J 



Bartsch, Proc. Boston Soc. Nat. Hist., vol. 34, pi. 13, fig. 48. 

 Common, inside, eel-grass beds. 

 Odostomia {Chrysallida) ioyatani Henderson & Bartsch. 



Henderson & Bartsch, U. S. Nat. Mus. Proc, vol. 47, pi. 13, fig. 2. 

 Several specimens, inside, eel-grass beds. 

 Odostomia {Chrysallida) sp.? 



Two specimens of what seems to be an undescribed species were found with the 

 others of this group. They are stouter than the last, and have eight 

 spiral cords which are alternately larger and smaller, and joined by very 

 prominent raised threads tending to give the base a reticulated appear- 

 ance. In the other species of this group these connecting radial threads 

 are rather inconspicuous. 

 Odostomia engonia teres Bush? 



Dall, U. S. Nat. Mus. Bull. 37, pi. 41, fig. 9. 

 Three specimens have been provisionally referred to this form. 

 Peristichia tor eta Dall. 



DaU, U. S. Nat. Mus. Bull. 37, pi. 42, fig. 10. 

 Several, inside. 

 Epitoneum novemcostata (Morch). 

 Figure 22. 



One specimen, inside. 

 Epitoneum humphreysii (Kiener). 

 Figures 23 and 24. 



Four specimens (two with 8 varices, one with 7, and one with 8 except last 

 whorl which has 10 varices), inside. (See Coues.) 

 Epitoneum angulata (Say). S J 



Dall, U. S. Nat. Mus. Bull. 37, pi. 50, fig. 10. 

 Two specimens, inside. 

 Epitoneum multistriatum (Say). S J 



Dall, U. S. Nat. Mus. Bull. 37, pi. 50, fig. 5, and figure 28. 

 One specimen, inside. 

 Epitoneum novangliae (Couthouy). S 



Like above but slightly umbilicate. 

 Epitoneum lineata (Say). S C J 

 Figures 26 and 27. 



Occasional, inside. One specimen perforate. 

 Polynices {Neverita) duplicaia (Say). S C O J 

 Dall, U. S. Nat. Mus. Bull. 37, pi. 51, fig. 12. 

 Fairly common, sand flats, inside. (See Osborn.) 

 Polynices {Neverita) duplicaia campechiensis (Reeve). 

 Shell very depressed, umbilicus open. 



Two typical individuals out of eleven and three intermediate ones. 

 Polynices {Euspira) heros (Say). 



Dall, U. S. Nat. Mus. Bull. 37, pi. 51, fig. 11. 

 Fragment of a four-inch specimen. 



