108 VARICELLA, JAMAICA. 



I could not find the type of this species in the Adams 

 collection. He place it between tenera and proximo, in the 

 catalogue of 1851. It is about 11.25 mm. long, 2.25 wide 

 with 10 whorls. 



51. V. LEVIS (C. B. Adams). PL 16, figs. 3, 4. 



"Shell much elongated, conic; very pale brown, shining; 

 very thin, smooth, with microscopic transverse striae, which 

 are quite numerous on the upper whorls; spire with recti- 

 linear outlines; 'apex not very small; whorls seven, a little 

 convex, with a moderately impressed suture; aperture ovate, 

 acute above ; labrum thin and sharp ; eolumella slightly arcu- 

 ate. Mean divergence 14 or 15; length .42 inch; breadth 

 .1 inch; length of aperture .13 inch." (Adams). 



Jamaica, 



Achatina levis C. B. A., Contrib. to Conch, no. 2, p. 26 

 (Oct., 1849). PFR., Monogr. iii, p. 502. Glandina l&vis H. 

 & A. AD., Gen. Rec. Moll, ii, p. 109. 



The type (pi. 16, figs. 3, 4) is a unique, dead, gray- white 

 and 'opaque shell in the Adams collection. It measures, 

 length 11, diam. 2.8, aperture 3 mm., whorls 7%. The first 

 2% whorls are smooth; then some impressed lines appear, 

 weaker than in allied species, and becoming sparser on the 

 later whorls. Near the end of the penult, whorl there is a 

 weak varix-line, preceded by a faint brown streak. The 

 outer lip is unusually sinuous. The columella is short, con- 

 cave above, slightly excised at the base, producing a very 

 oblique truncation. In another example, in coll. A. N. S., 

 the columellar truncation is less obvious, nearly obsolete. In 

 other respects the two examples seen agree. 



The very weak development of the groove sculpture dis- 

 tinguishes this species. In basal view a very minute false- 

 umbilicus is seen, indicating a gyrate columellar axis. The 

 weak, almost obsolete truncation of the columella is a fea- 

 ture unlike the associated species, and resembles forms of the 

 V. blandiana group. 



52. V. PELLUCENS (C. B. Adams). PL 18, figs. 20, 21. 

 Shell small, glossy, slender, corneous, ornamented with very 



