VARICELLA, JAMAICA. 103 



cave in the middle, convex above and 'below. The outer lip 

 is straight, a little prominent where it joins the retracted 

 basal lip, but without a tooth or callus at -the lower third. 

 An average specimen measures, length 24, diam. 8, aper- 

 ture 11.6 mm. 



This species is quite distinct in sculpture from all related 

 forms. 



46. V. ARCUATA (Pfeiffer). PI. 17, fig. 13. 



Shell fusiform-turrite, rather thin, glossy, subarcuately 

 and closely costulate; amber-yellowish, ornamented with nar- 

 row, remote arcuate reddish pale-bordered streaks. Spire 

 subulate, acute, the suture crenulate. Whorls 9, flat, the last 

 about one-third the total length. Columella somewhat 

 straightened, shortly truncate. Aperture oblong, peristome 

 simple. Length 13, diam. 3.5, aperture 4.33 mm. long, 2 

 wide. (P/r.). 



Jamaica (Gosse, Mus. Cuming). 



Glandina arcuata PFR., Proc. Zool. Soc. 1845, p. 138. 

 Achatina arcuata PFR., Monogr. ii, p. 261. Not A. arcuata 

 Reeve, Conch. Icon, v, pi. 17, f. 83 (1849), nor 0. arcuata of 

 Tryon, Man. Conch, i, p. 31. 



Pfeiffer 's original description, translated above, was prob- 

 ably based upon a shell different from that described and fig- 

 ured by Reeve, followed by Tryon. The sculpture and the 

 shape of the columella, as described by Pfeiffer, do not agree 

 with Reeve's description and figure. 



I have figured on pi. 17, fig. 13, a shell which agrees 

 well with Pfeiffer 's diagnosis except in having three-fourths 

 of a whorl less in a slightly larger shell. It is narrowly 

 turrite, the upper fourth tapering much more rapidly than 

 the rest of the shell, the last three whorls having a some- 

 what cylindric contour. The first 2% whorls form the 

 smooth, pupiform embryonic shell. Subsequent whorls are 

 sculptured with irregularly spaced vertical grooves. The 

 last whorl is not grooved; the sculpture is closer and more 

 regular than on the spire, consisting of low, rather coarse 

 vertical striae. On the face of the last whorl there are 6 of 



