48 STROBILOPS, S. G. DISCOSTROBILOPS. 



Helix huhhardi A. D. Brown, Proc. A. N. S. Phila., 1861, 

 p. 333, text-fig. — Strohila huhhardi Binxey, Terrest. Moll. V, 

 1878, p. 260, fig. 153; pi. 5, n. (dentition of a Georgia speci- 

 men).— W. Wenz, Nachrbl. D. M. Ges. 1916, p. 1S5.— St rohilus 

 huppardi Clessin, Malak. Blatter, n. F. VII, p. 79. 



Brown's type is a "dead" shell, drawn in PI. 7, figs. 1-3. 

 After these figures were drawn it was opened and found to 

 have basal folds as described above, and like those of PL 8, 

 fig. 9. The anterior part of the infraparietal lamella is very 

 low. The interparietal lamella is delicate and thread-like but 

 perfectly distinct, and by possessing this lamella, the type 

 from the Texas coastal plain differs from all other huhhardi 

 from Mexico, the West Indies and Florida which I have 

 opened. The significance of this lamella is uncertain, in the 

 absence of series from the coast of Texas. It may turn out to 

 be merely occasional, and to be regarded as an atavistic muta- 

 tion. If it is a constant character in this region, a separate 

 subspecies is indicated. Temporarily, and in order to provoke 

 further investigation, I am taking this view. 



15a. S. huhhardi vendryesimia (Gloyne). PI. 7, figs. 7, 8, 9 

 (topotype) ; figs. 4-6, 10-12. PI. 8, figs. 1-9. 



General shape as in S. huhhardi; light brown, glossy, finely 

 costulate above, striate beneath. Infraparietal lamella either 

 wholly immersed (as in PI. 8, figs. 3, 4) or having a very low 

 extension forward (as in PI. 7, figs. 5, 7). No interparietal 

 lamella. Basal folds typically three (PI. 7, figs. 4, 7; pi. 8, 

 fig. 7), but frequently four (PL 8, figs. 1, 8, 9). Lip narrow, 

 but slightly thickened, more or less brown-tinted. 



Height 1.05, diam. 2.6 mm.; 4% whorls. Topotype. 



Jamaica: Bellevue, St. Andrew, type locality (Glo^Tie, 

 Bland and others). 



Cuba: El Abra, Vinales (J. B. Henderson). 



Bermuda: Admiral's Cave, Church Cave near Tuckerstown, 

 "Whitby Cave, Bailey's Bay, quarry between Tuckerstown and 

 Walsingham (A. Gulick, S. Brown, A. Haycock, H. C. Hoyt). 



Florida: Sugarloaf Key, Big Pine Key (Pilsbry) ; Loss- 

 man's Key (C. B. Moore) ; Miami (S. N. Rhoads) ; LaCosta 



