VARICELLA, JAMAICA, HAITI. 85 



Group of V. jamaicensis. 



The narrow, widely separated grooves of the second and 

 third whorls are a peculiar feature of this group. 



30. V. JAMAICENSIS (Pfeiffer). PI. 7, figs. 18, 19, 20. 



The first whorl is smooth; the second and third vertically 

 grooved, the grooves narrow, separated by low, wide and 

 rather flat riblets. At the end of the third whorl these give 

 place abruptly to the strong angular ribs of the neanic and 

 adult stages (fig. 18). These ribs are equal to their inter- 

 vals, and straight except on the last whorl, where they curve 

 forward below the periphery. There are about 3 ribs in 1 

 mm., on the last whorl. On each of the later whorls 1 there 

 are about three varices. Those on the spire are marked by 

 two, on the last whorl by three brown spots. Columella short 

 and straight, obliquely truncate. 



Length 23, diam. 7.4, aperture 8 mm.; whorls 9y 2 . 



Length 19, diam. 6.4, aperture 6.5 mm.; whorls 8%. 



Jamaica: Bluefields (Gosse). 



Achatina jamaicensis PFR., P. Z. S. 1845, p. 137 ; Monogr. 

 ii, p. 290. 



Section VARICELLOPSIS Pilsbry, n. sect. 



Varicellas of moderate or large size, with sculpture of ver- 

 tical riblets and spiral grooves; varices and outer lip nearly 

 straight, not angular or otherwise specialized in the sub- 

 peripheral region. Embryonic shell of 3% whorls, with the 

 initial % whorl smooth, the rest finely eostulate; post-em- 

 bryonic sculpture coarser. Type V. peruviana. 



This group is probably -confined to Haiti, but the locality 

 of V. peruviana is still unknown. The type, V. peruviana, 

 resembles Jamaican forms of the section Varicellaria. 



Two species are grouped here, V. peruviana with coarse 

 costulae and deeply cut suture, and V. richardi, a form with 

 much finer sculpture. 



31. V. PERUVIANA (Lamarck). Vol. I, p'l. 11, fig. 97. 



The first y 2 to % whorl is smooth; the next 2y 2 whorls 

 are finely striate vertically, the whole embryonic shell ap- 

 parently consisting of nearly 3y 2 whorls. Then the ribbed 



