122 VARICELLA, PORTO RICO. 



Porto Rico: San Juan and Humacao, under dead leaves, 

 very rare (Blauner). 



Glandina sulculosa SHUTTLEW., Diagn. n. Moll. no. 6, p. 

 144, in Mittheilungen der naturforschenden Gesellschaft in 

 Bern 1854, p. 52. 



This species is closely related to V. terebrceformis but 

 differs in sculpture. The first 2y 2 whorls are smooth. The 

 rest are regularly and deeply grooved, with occasional vari- 

 ceal grooves preceded by a wider smooth brown streak. On 

 the last whorl there are three varices. Two specimens from 

 near San Juan measure : 



Length 8.8, diam. 2.5, aperture 3 mm., whorls 6%. 



Length 9.7, diam. 2.7, aperture 3 mm., whorls 6%. 



V. elata of Cuba resembles V. sulculosa in sculpture, but 

 it has a more oblique aperture, effuse basally, and a some- 

 what more openly gyrate axis. In V. sulculosa no central 

 hollow is seen in a basal view. In some examples the grooves 

 are somewhat more spaced than in the typical form, approach- 

 ing V. terebrceformis. 



69. V. PORTORICENSIS (Pfeiffer). PL 19, fig. 36. 



Shell turrite-oblong, smoothish, irregularly sculptured with 

 impressed longitudinal lines, glossy, ornamented with darker 

 streaks. Spire long, somewhat obtuse; whorls 8, flattened, 

 the last slightly more than one-third the total length. Colu- 

 mella arching forward, abruptly truncated at the base of the 

 aperture. Aperture elliptical-semioval ; peristome simpla 

 Length 20, diam. 7, aperture 8x3.3 mm. (Pfr.). 



Porto Rico: San Juan (type loc.), Hamacao and Luquillo 

 (Blauner) ; Aguadilla, Quebradillas and Vega baja (Gund- 

 lach) . 



Achatina portoricensis PFR., P. Z. S. 1848, p. Ill ; Monogr. 

 ii, p. 258. Glandina p., SHUTTL., Diagnosen no. 6, p. 144. 

 MARTENS, Jahrb. D. M. Ges. iv, p. 345, 1877. CROSSE, Journ. 

 de Conchyl. 1892, p. 10. Achatina riisei PFR., Zeiteehr. f. 

 Malak. 1852, p. 151 ; Monogr. iii, p. 509 ; Conchyl. Cab. p. 370 

 pi. 67, f. 3, 4. 



The first 2% whorls are smooth. All the rest are irregu- 



