VARIATION AND ZOOGEOGRAPHY OF LIGUUS IN FLORIDA. 459 



Moore (1904) and Rhoads (1906) found 4 crenatus, 7 roseus, 2 castaneut, of the 

 ordinary Miami type. Mr. C. T. Simpson also found the same forms there in 

 February, 1905. No hybrid race has been found further north. 



Hammock H mile south of U. S. Agricultural Exi>eriment Station of Plant 

 Diseases, near Miami, collected by S. N. Rhoads February, 1906. Sheila are of 

 the Miami type. All seen were taken, the proportions being as follows: crenatus, 

 115 specimens, roseatus 39 specimens, castaneozonatus , 24 specimens, testa nmm 

 17 specimens. The proportion of tcsludineus is much greater than in any other 



Miami lot. 



Brickell's Hammock; collected by Professor J. W. Harehbcrger, December, 



1910, and August, 1911. Crenatvs and castaneozonatus of Miami patterns 



One of the crenatus is figured, PI. XXXIX, fig. 20n, in which part of the lines are 



green, part yellowish olive. 



Cutler, about twelve miles below Miami, collected by Mr. C. H. Moore, 1901 



(PI. XXXIX, figs. 22 a-h). L. f. crenatus with olive or olive-green line* on 



yellow ground fading on the spire, or on white ground, very largely predominate 

 in all situations here, according to Mr. Moore's note. None were found with 

 bright green lines. Roseatus appears to be comparatively rare. In castanto- 

 zonatus (figs. 22 a, 6, c, d) the zones are frequently black and continuous or nearly 

 so on the last whorl, where they often continue to the aperture, as in the Key 

 Largo form. Unlike the latter, they are broken on the spire, as in the Miami 

 form. In a series of 32 adults, the upper zone extends upon some part of the 

 last whorl in all, and the basal zone is developed in 30. The very dark forma 

 are chiefly found in very thick woods according to Mr. Moore, but also associated 

 there with many of the pale crenatus type. 



In one of the Miami lots there are 30 castaneozonatus, of which number 

 neither brown zone extends to or upon the last whorl in 19; the upper zone only 

 in 2, and both bands in 9 specimens, though in only three of these are they con- 

 spicuous on the last whorl. The comparison may be tabulated thus: 



30 Miami Shell*. 32 Cutler Bbeu*. 



Two zones or series of brown ( Both extending on last whorl J 



spots representing them . . . -] Upper zone only on last whorl 2 



(. Neither extending upon last whorl 19 



The Cutler colony is thus much more melanistic than that of Miami, resembling 

 the Largo form in this respect. The interruption of the band into flames on 

 the neanic whorls is unlike the Largo colonies, and similar to that of Miami. 



The testudineus form (PL XXXIX, fig. 22n) was found rare at ™**** 

 Mr. Moore. Only five were taken, although the dark shells were especially looked 

 for. These are extremely melanistic, being black with some yellowish spoil, 

 the early whorls and columella white. None of the green or blue marmea 

 specimens were taken, such as occur between Miami and Cutler. 



Homestead, 28 miles south of Miami, collected by S. N. Rhoads, February 

 1906. Several dead specimens of L. crenatus. 



2 



