HELIX-CEPOLIS. 95 



from the singular arrangement of the teeth resembling both trizon- 

 alis and cepa, I am disposed to refer it to Hayti. (Brown .) 



H. trizonaloides BROWN, Proc. Acad. Nat. Sci. Phila. 1861, p. 

 333. PFR. Monographia v, p. 312. 



Known to me only by the above description and remarks. 



H. PIMESOMA Pilsbry. PL 24, figs. 44-47. 



Imperforate, depressed-globose-conic, solid, yellowish with two 

 brown bands on the upper surface, obliquely striate ; spire low- 

 conical, apex glossy, obtuse; suture impressed ; whorls 4, convex, 

 the last depressed, rounded at periphery, deeply, abruptly deflexed 

 anteriorly, and with a deep pit on the periphery a short distance 

 behind the aperture ; aperture small, quite oblique, nearly closed by 

 the teeth projecting into it ; peristome very broadly reflected, flat- 

 tened, its lower margin straightened, adnate over the umbilicus, 

 bearing a square tooth within ; outer wall of aperture bearing a 

 heavy callous tooth a short distance with in. Terminations of peristome 

 only slightly approaching. 



Alt. 12, diam. maj. 19, min. 15? mill. 



Hayti. 



This species is distinguished from H. trizonalis by its smaller aper- 

 ture, more obstructed by large teeth ; more conical spire ; and much 

 more broadly reflected, flattened peristome. There is no indentation 

 at the place of the umbilicus. 



H. SQUAMOSA Ferussac. PI. 56, figs. 20-22. 



Imperforate, depressed, carinated, thin but rather strong, luster- 

 less, brownish yellow, irregularly and rather sparsely speckled 

 with small chestnut-brown elongated spots; surface decussated by 

 rather coarse spiral grooves and oblique sulci ; spire low, apex pol- 

 ished, suture impressed ; whorls 4 J, slightly convex, the last carinated 

 at the periphery, the carina crenulated by the prominent oblique 

 riblets of increment, base flattened, indented around the axis ; in 

 front the whorl descends abruptly ; it is a trifle constricted just 

 behind the peristome, then gibbous, and behind this gibbosity there 

 is a decided indentation just above and upon the periphery; aper- 

 ture quite oblique, broad lunar ; peristome flesh colored, narrowly 

 expanded, the baso-columellar margin adnate to the whorl over the 

 umbilicus and for a distance on the base ; thickened within. 



Alt. 9, diam. 17 mill. 



Ins. Porto Rico. 



