94 VARICELLA, JAMAICA. 



c. With subsutural plication ; 13x5 mm. 

 with. 6 whorls. Haiti. 



V. ptyclwraphe, no. 64. 



c 1 . With unequally spaced grooves, not pli- 

 cate above; about 20x6 mm., with 8 

 whorls. Porto Rico. 



V. portoricensis, no. 69. 



c 2 . Much smaller, slender, diam. 3 mm. or less. 

 d. Sculpture of weak, irregularly spaced 

 grooves. V. impressa, no. 67. 



d 1 . Sculpture of regular, deeply im- 

 pressed grooves. 



V. sulculosa, no. 68. 



37. V. LEUCOZONIAS (Gmelin). Vol. I, pp. 26, 251. 



The first two whorls are smooth; on 'the third some weak 

 strias appear. At the end of the third whorl there is a linear 

 varix, marking the end of the embryonic shell, beyond which 

 regular impressed lines 1 cut the surface into flat wide riblets, 

 and occasional white varix-streaks appear. The last whorl, 

 in the typical form, has a sculpture of flat, \vide riblets 

 parted by narrow grooves, near the suture, but this sculpture 

 weakens and largely disappears on the middle part and base 

 of the whorl, where it is smooth except for irregular fine 

 gro wth- wrinkles. 



Portland parish, Jamaica. 



Das Tlmmiclien, WALCH, Der Naturforscher, Halle, iv, 

 1774, p. 36, 37, pi. 1. f. 3, 4. Mrom'bus edeutulus perelegans 

 etc. MARTINI, Gonchyl. Cab. iv, 1780, p. 220, pi. 148, f. 1371, 

 1372. Valuta leucozonias GMEL., Syst, Nat. 13, p. 3453 

 (1790), based on preceding references, Achatina albolineata 

 LAM., Anim. s. Vert. vi. pt. 2, p. 132 (1822). Achatina leu- 

 cozonias Walch, PFR., Monogr. ii, p. 280. 



I have been unable to find that Walch proposed a Latin 

 name for this snail in his verbose article in Der Naturforscher^ 

 although he figured it well. Martini's figures were from a 

 drawing supplied by Walch. The first binomial term was 

 applied by G-melin, so far as I can learn. 



