VARICELLA. 93 



B. Cuban Species. 



I. Outer lip with, a small projection or point at the lower 

 third; length 18 to 26 mm., the diam. more than one- 

 third the length. 



a. Earlier post-embryonic whorls with -close, fine striae. 

 &. Later whorls with few, widely spaced grooves. 



V. trinitaria, no. 58. 

 ft 1 . Later whorls with close, fine grooves. 



V. multilineata, no. 59. 

 a 1 . Post-embryonic whorls with widely spaced grooves. 



V. swiftiana, no. 60. 



II. Outer lip simply arcuate; diam. one-third of the length 

 or less. 



a. Diam. about one-fourth the length; corneous or 

 amber-tinted forms. 



&. 8x2 mm., with 6 whorls; sculpture of narrow 

 grooves separated' by wider smooth intervals ; a 

 narrow false-umbilicus. V. elata, no. 56. 



6 1 . 9.5x2.3 mm. with 9 whorls; closely striate. 



V. subulatoides, no. 57.. 



6 2 . 15 x 4 mm., whorls 7%, smoothish with a few 

 impressed lines. V. succinea, no. 62. 



a 1 . Diam. one- third the length; smoothish with indis- 

 tinct varices; 15x5 mm. with 7 whorls. 



V. gundlachi, no. 61. 



C. Species of Haiti, Porto Rico and the Virgin Islands. 



I. Columella with a fold above and obliquely truncate at 

 base; closely hair-striate ; slender, 6.5 to 9 mm. long. 

 Haiti. V. biplicata, no. 65. 



II. Columella normal. 



a. Conspicuously streaked and flamed with brown; 23 

 x 8 mm. Haiti. V. histrio, no. 66. 



a 1 . Pale, usually with darker varix-streaks. 



&. A small point at the lower third of the lip. 

 Haiti. V. denticulata, no. 63. 



& 1 . No point on the lip. 



