80 VARICELLA, JAMAICA. 



a. Outer lip angular, 'base deeply receding, columella 

 strongly twisted. 



ft. Solid, turrite, ribs coarse, 2 in one mm. ; length 



'about 30 mm. V. procera, no. 26. 



ft 1 . Bibs finer, 4% to 7 in one mm.; length. 20 to 



25 mm. V. griffitliii, no. 27. 



a 1 . Outer lip convex, not angular; columjella vertical, 



straightened, a concave zone at periphery; length 



15 'to 20 mm. V. ligata, no. 28.. 



II. First whorl smooth, then fine riblets gradually begin; 



aperture nearly half the total length; outer lip arched 



forward. 



a. Marked with bold wedge-shaped stripes; 3 riblets, 

 in one mm. V. philippiwua, no. 29. 



a 1 . 'Stripes narrower; 5 to 7 riblets in one mm. 



V. p. elegans, no. 30. 



III. First whorl smooth, the second >and third with rather 

 widely spaced grooves; aperture not much, more than 

 one-third the total length; lip arched forward near the 

 base; columella short and straight; 3 spots in place of 

 a varix-streak. V. jamaicensis, no. 30. 



26. V. PROCERA (. B. Adams). PL 7, figs. 1-5. 



Adams' type lot consists of 18 specimens, wholly similar 

 to those drawn in my figs. 3, 4. The species is readily known 

 by its large size and turrite shape, the very prominent angle 

 of the outer lip, deeply excised basal lip, aztd sinuous colu- 

 mella. The first half- whorl is smooth; then begin regular 

 riblets. The limit of the nepionic period is not marked by 

 any change of sculpture, but possibly is indicated by the first 

 colored streak, which is at the end of 3!/2 whorls. Very weak 

 traces of coarse spiral striae are usually visible on the last 

 whorl. 



Jamaica. 



Achatina procera C. B. A., Contrib. to Conch, no. 2, p. 24 

 (Oct. 1849). 



27. V. GRIPFITHII (C. B. Adams). PL 7, figs. 6, 7. 



"Shell thin, diaphanous, pale brownish, ornamented with 



