108 BULIMULUS-NAESIOTUS. 



The specimen illustrated, collected by Dr. Baur (U. S. Nat. Mus. 

 no. 107291) differs from Pfeiffer's description in being rather solid 

 and not pellucid. It is yellowish-brown with some dark oblique 

 streaks and a faint light peripheral girdle, the earlier 5 whorls 

 blackish -purple, gradually fading below. The columella is strongly 

 truncate below. Alt. 14'8, diam. 5'8, length of aperture 4'8 mill. 

 It is perhaps closest to B. calvus Sowb. Dall writes : " This is 

 very closely related to B. ustulatus Sby., is slightly longer and more 

 pupiform, and wants the bright yellowish bands. The whorls are 

 more rounded in B. galapaganus than in B. perspectivus, and the 

 latter is darker and more uniformly colored." 



B. ESCHARIFERUS (Sowerby). PI. 22, figs. 8, 9. 



Shell rimate-perforate, oblong-pyramidal, rather thin ; brown, a 

 little darker on each side of a light peripheral girdle which ascends 

 the spire just above the suture, and with a narrow light line below 

 the suture. Surface shining, with indistinct wrinkle-striae, a little 

 puckered under the sutures, with faint spirals in fresh shells. Spire 

 slender, its lateral outlines a trifle convex, slightly attenuated near 

 the obtuse apex. Nepionic whorls 2i , costellate. Whorls 72-8, the 

 earlier convex, the rest less so, last whorl oblong. 



Aperture small, about a third the shell's length, purple-brown and 

 showing the band inside ; outer lip a trifle expanded, whitish ; col- 

 umellar lip dilated. Columella obliquely truncated below. 



Alt. 16, diam. 6, alt. of aperture 5'3 mill. 



Alt. 15*7, diam. 6'3, alt. of aperture 5*5 mill. 



Alt. 18, diam. 6'5, alt. of aperture 6 mill. (Pfr.). 



Chatham Island (Darwin, Kellett, U. S. Fish Commission and 

 Dr. Baur), under stones near the shore at Wreck Bay and else- 

 where ; Charles Island (H. M. S. Peterel). 



Bulinus eschariferus SBY., Conch. Ill, figs. 85 (a, b), 1833. 

 Bulimus eschariferus PFR., Syrub., II, p. 45 ; Mon. Hel. Viv., II, p. 

 115, 1848. SMITH, P. Z. S., 1877, p. 72.Bulimulus (Ncesiotus) 

 eschariferus PFR., Nom. Hel. Viv., p. 254, 1881. KEIBISCH, Isis, 

 1892, p. 14. STEARNS, Proc. U. S. Nat. Mus., xvi, pp. 381, 426, 

 1893. DALL, Proc. A. N. S., Phila., 1896, p. 434. Bulimus rug- 

 ulosus REEVE (not Sby.), Conch. Icon., pi. xx, fig. 123, 1848 (cita- 

 tion, diagnosis and figure refer to eschariferus}. Bulimulus (Om- 

 phalostyla) eschariferus H. & A. AD., Gen. Rec. Moll., II, p. 161, 

 1855. Bulimulus eschariferus ANCEY, Bull. Soc. Mai. France, IV, 



