VARICELLA. 57 



The form from near Sancti Spiritus is shorter, 5 mm. long, 

 with 71/2 whorls. 



Orbigny's B. striaticostatus (pi. 14, figs. 29, 30) is identi- 

 cal with gracillima, and doubtless came from the same dis- 

 trict. The type measured 5 x 1.25 mm. Poey mentions 

 Stenogyra ejuncida Shuttl. as a synonym (Memorias, p. 396). 

 It was never published. 



3a. Var. floridana Pilsbry, n. v. 



Last whorl with about 25 ribs, the intervals with 6 to 8 

 striae; otherwise like Cuban gracillima. Length 6.1, diaim. 

 1.5 mm., with 8 whorls. 



Florida: Key West (Hemphdll) ; Big Pine Key (Brown 

 and Fowler, 1904) ; Miami and Arch Creek, 12 miles north- 

 ward (S. N. Rhoads). 



Achatina gracillima BINNEY, Terr. Moll, ii, p. 293, pi. 53, 

 f. 3. Stenogyra #., W. G. BINN., Land and Fresh-water 

 Shells i, p. 232; Terr. Moll, v, p. 195; Man. Amer. Land 

 Shells, 1885, p. 426, fig. 474. Opeas gracillima RHOADS, 

 Nautilus xiii, p. 46. Melaniella gracillima floridana PILSBRY, 

 Nautilus xix, p. 40, Aug. 1905, no description. 



Fresh shells are brown, not drab as stated by Bkiney. 



3b. Var. sanctithomensis Pilsbry, n. v. PI. 14, fig. 32. 



Shell ribbed about as in the Cuban form, but with much 

 finer, closely crowded striae between the ribs, 9 to 12 in each 

 interval. Otherwise similar to V. gracillima. 



St. Thomas, hill opposite Baker's, under stones among 

 fine earth (Bland, Swift). 



Biilimus sp. undet., BLAND in Adams' Contnib. to Conch, 

 no. 11, p. 222 (1852). 



I have seen numerous specimens of this form. It has 

 much finer, more even and numerous interstitial striae than 

 either the Cuban or Floridian shells. The base only is 

 illustrated. 



4. V. MANZANILLENSIS ('Gundl.' P'f F. ) . PI. 15, fig. 11. 



Shell imperforate, fusiform-subulate, thin, closely striate 



