('. I>i;VMi:i>, ll.oKIDA AND \VKST IMMI-. 



third or tliinl and fourth hands dotted, or they have all the hands 

 BUbcontinuous as in mo>t Floridian shells. 



Floridian specimens (pi. 5, figs, is, 2 1. 22, ~23. and pi. 20, fig. 32) 

 are the most \ariahle of all. In one lot from the Caloosahatchie 

 river there are two specimens with the typical band-formula 123I.">, 

 upper three hands dotted ; four with the formula I034f>, the upper 

 hand verv faint, dotted, tlie peripheral also dotted; two without 

 hand.-, and one (pi. '20, fig. 32) with faint traces of the hasal hands. 

 Mr. llemphill found the same form in the vicinity of Charlotte Ilar- 

 hor, Fla., one of his specimens figured hy Uinney ( Man. Amer. Land 

 Shells, p. 40S, fig. 449), having the formula 12345, the upper three 

 hands hrokon into dots. The shell, in this form, is often more ven- 

 tricose with shorter spire than in most C'uhan iiitirt'eliniis, hut this 

 varies a good deal. Mr. Wright's K. hnitpln'lli applies to tlnse forms. 

 It is the ordinary South Florida form of the species, stated to be a 

 ' thinner shell than 1>. iiKiriclfnits Poey, and more corpulent, while 

 the revolving hands are redder, liner and continuous in the last-named 

 species ; the suhstance of the shell of />'. nii/rft'/in/is is white, while 

 that of It. hemphilll is light amlier colored." These supposed differ- 

 ences are largely due to erroneous ideas regarding >nn/-i'<-/fnn.<, which 

 is really not "white" nor has it "continuous" hands; and Cuban 

 specimens are fully as thin as " //. hemphilli." 



Specimens from I'pper Malacuaiha Kev, near Miami river, and 

 Micco, vary from 123-1.~> to 0231.") or 0034."), all bands generally con- 

 tinuous though irregular (pi. .">, ligs. 22, 23). These often exceed the 

 dimensions of the largest Haitian shells I have seen, reaching as great 

 a -i/.e as alt. 21.',,diam. 1 1 [,, length of aperture 10.J, mill. The shell 

 varies from as obese as tvpical dominions to as narrow as Hinney's 

 figure of " i/ii/i-if/i/iitx." This is what was lignred by liinney as Ii. 

 marielinus. A Cuban specimen before me has the same characters, 

 alt. 17, diam. sj,, length of aperture, 1 ', mill. 



Still another Floridian t'orm remains to he noticed: the haiidh , 

 oblong shells, light brown, very translucent, with indistinct corneous 

 streaks, alt. I'.*. 1 ,, diam. 1O, length of aperture 10 mill. (pi. .">, figs. IS, 

 21). The apical whorl i~ a little more depressed than in the typical 

 i/iii/iiilii-iix. It occur- at Lal<e Helen, Yolllsia ('IP., and between 



Mosipiito lagoon and the Atlantic. This local \arieiy, which has no 

 name, has been referred by Mr. Wright to hi- /!. l'in/>liilli , but is 

 not mentioned in the original account of that form. Similarly col- 



