94 VARICELLA, JAMAICA. 



c. With subsutural plication ; 13 x 5 nun. 

 with 6 whorls. Haiti. 



V. ptyclwraphe, no. 64. 



c 1 . With unequally spaced grooves, not pli- 

 cate above ; about 20 x 6 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 

 striae 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 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, wide 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 

 growth- wrinkles. 



Portland parish, Jamaica. 



Das Thurmchen, WALCH, Der Naturforscher, Halle, iv, 

 1774, p. 36, 37, pi. 1, f. 3, 4. Strombus edentulus perelegans 

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

 1372. Voluta 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 Gmelin, so far as I can learn. 



