120 BULIMULUS-NAESIOTUS. 



brown, encircled by two wide brown bands ; spire acute, suture 

 linear. Whorls 8| to 10, flat, regularly increasing, base compressed, 

 nucleus smooth, brown. Aperture oblique, compressed laterally, 

 narrow, hatchet shaped ; peristome simple, the margins joined by a 

 shining callus, right margin angularly adnate above, basal margin 

 forming an angle with the somewhat thickened columellar margin ; 

 a channeled columellar fold winds around the axis (Reibisch}. 



Alt. 10, diarn. 4'25, alt. of aperture 3'5 mill. 



Alt. 8, diam. 3'75, alt. of aperture 3 mill. 



Chatham Island, in moss and on ferns, 900-2,000 feet (Wolf, fide 

 Reibisch). 



Bulimulus (Pelecostoma') canaliferus REIBISCH, Isis, 1892, p. 25, t. 

 ii, fig. 6 ; STEARNS, Proc. U. S. Nat. Mus., XVI, pp. 415, 428, 1893. 

 Bulimulus (Ncesiotus) canaliferus Reibisch, DALL, Proc. A. N. S. 

 Phila.,1896,p.442,pl.l5,f. 14. 



" This is a peculiar shell, characterized by its many-whorled spire, 

 short aperture, and a large umbilicus with its walls deeply excava- 

 vated, so that the groove shows as a prominent ridge on the pillar 

 within the aperture. In the specimen sent by Herr Reibisch the 

 edge of the aperture is hardly thickened and not at all reflected, 

 there is a thin callus deposit over the body, but no trace of a parie- 

 tal tooth. The species, with a totally different surface, has somewhat 

 the form of B. rugiferus, but with a less slender and shorter spire. 

 Reibisch 's figure gives the impression of a more slender shell than 

 the specimen I have examined " (Dall). 



B. SCULPTURATUS (Pfeiffer). PL 24, fig. 41. 



Shell perforate, ovate-turrited, rather thin ; longitudinally rather 

 remotely and strongly wave-wrinkled, the intervals of the wrinkles 

 sharply striated spirally; brownish. Spire long-conic, the apex 

 rather acute, corneous. Whorls 7, convex, the last about two-fifths 

 the total length. 



Aperture elliptical, angular at base ; peristome simple, acute, the 

 columellar margin vaulted, reflexed, free. Columella straightened, 

 extending to the base of the aperture. Alt. 14, diam. 6 mill. ; 

 length of aperture 6* mill. (Pfr.~). 



Galapagos Is. (Darwin). 



Bulimus sculpturatus PFR., P. Z. S., 1846, p. 29 (Gal. Is.) ; Mon. 

 Hel. Viv., II, p. 183, 1848 ; IV, p. 476, 1859. Bulimus (Ncesiotus) 

 sculpturatus PFR., Mai. Blat. ii Vers., p. 161, 1854. Bulimus sculp- 



