40 STROPHOCHEILUS-DRYPTUS. 



elongated; apex obtuse, the tip turning imvard, generally entire; 

 earlier whorls densely granulated when not eroded. Whorls 6. 



Aperture slightly less than half the shell's length, narrow-ovate, 

 bluish inside ; peristome white or yellowish, narrowly expanded, 

 rather thick ; columella short, vertical, with a short but strongly 

 canvex entering fold above, parietal callus bluish-transparent. 



Alt. 85, diam. 44, alt. of aperture 43 mill. 



Alt. 88, diam. 42, alt. of aperture 43 mill. 



Alt. 70, diam. 37*, alt. of aperture 38 mill. 



Maricaibo and Prov. Cumana, Venezuela (Swift) ; La Baja, prov. 

 Pamplona, U. S. of Columbia (Funck, for B. leptochilus). 



Helix (Cochlostylck) pardalis FER., Prodrome p. 48. Hist. pi. 112, 

 f. 7, 8 (immature). Bulimus pardalis PFR., Symb. iii, p. 86; Con- 

 chyl. Cab. p. 184, pi. 54, f. 1-5 ; Monogr. ii, p. 36. MARTENS, 

 Binneumoll. Venez. p. 16. Not B, pardalis Reeve. B. leptochilus 

 PFR., P. Z. S. 1848, p. Ill ; Monogr. ii, p. 534 (young shell).- 

 B. lindeni REEVE, Conch. Icon. pi. 31, f. 189. B. astrapoides JON- 

 AS, Zeitschr. f. Malak. 1844, p. 35 ; Molluskologische Beitrage, pi. xi, 

 f. 17, 17a. PHILIPPI, Abbild. u. Beschreib. i, p. 157, pi. 2, f. 3, 4. 



Allied to S. moritzianus, but zebra-striped throughout like an Acha- 

 tina, and with only faint traces of the microscopic sculpture. The 

 columellar fold is decidedly stronger than in moritzianus, but less 

 strong than S. marmoratus. The aperture is as a general rule less 

 than half the shell's length ; but in one specimen of the ten before 

 me it slightly exceeds the half. The last suture, viewed from the 

 back, is nearly parallel with those above in S. pardalis, but is not- 

 ably oblique in the other species mentioned. 



S. MARMORATUS Dunker. PI. 20, fig. 45. 



Shell oblong-ovate, solid, perforated ; covered with a yellow or 

 brownish cuticle, under which it is zigzag ly zebra-striped purple- 

 brown and whitish, the earlier whorls dull purplish-brown with light 

 suture. Surface with no malleation or spiral cords, but usually show- 

 ing some spiral girdles of short, close, vertical wrinkles, that at 

 suture most constant. Some whorls of spire with separated rib- 

 strire. Whorls 5, the last, especially its latter portion, most min- 

 utely, densely punctate-engraved in zigzag or % pattern, the design 

 usually much interrupted, but always recognizable; uext-to-last 

 whorl more coarsely, densely granose, without pattern. 



