184 BULLETIN OF THE 



Zonites nitidus, Mull. 

 arbor eus, Say. 

 indentatus, Say. 

 See Suppl., p. 139. 



Zonites minusculus, Binn. 



Dall thus describes a var. Alachuana (Pr. U. S. Nat. Mus., 1855, 270): — 



A form of it which, at first sight, looks different from minuscula is rather larger 

 than usual, and above shows no differences. On the base in the type the junction 

 of the inner lip with the body whorl takes place, following the course of the whorl, 

 inward from the middle line of the base of the whorl and generally about the inner 

 third. This gives a peculiarly thimble-shaped umbilicus. In the variety under 

 consideration, the above mentioned junction takes place outside of the middle line, 

 or even at the outer third, while the aperture is a little dilated. The result of this 

 is to show a much larger portion of the base of the penultimate whorl, and to alter 

 the facies of the umbilicus. For this form, found in Alachua County, Florida, I 

 would suggest the varietal name Alachuana. 



Zonites viridulus, Mke. 

 milium, Morse. 

 fulvus, Drap. 



These will not be repeated in the lists of the various Regions into which the 

 Province may be divided. (See Vol. V., p. 17.) 



The following are Northern Region Species: — 



Vitrina limpida, Gld. 



Angelicae, Beck. 



Vitrina exilis, Morelet. 



The distinction between the Eastern, Central, and Pacific Provinces not being 

 marked in these high latitudes, this species is given here. It might, perhaps, 

 with Patula pauper and Pupa borealis, rather be considered a species of the 

 Pacific Province. 



Zonites Pabricii, Beck. 



Binneyanus, Morse. 

 ferreus, Morse. 

 Zonites exiguus, Stimpson. 



Plate III. Fig. 4. 



The figures are copies of original drawings of Dr. Stimpson. 



Zonites multidentatus, Binney. 



See Suppl., p. 144. 



Acanthinula harpa, Sat. 

 Patula asteriscus, Morse. 





