.MACRODONTES. 33 



Bulimus gray anus Pfr. var.? (Bui. odontostomus var. fasciata 

 Dolirn on label) PFR., Novit. Concli. iii, p. 473, pi. 102, f. 16, 17 

 (1869). 



This form may prove specifically distinct from M. grayanus. It is 

 larger, less fusiform, and constantly multilineate with cream-white, 

 the two specimens examined by Pfeiffer and two before me agreeing 

 in these features. However, the white lines are cuiicular, produced 

 by air pores, as in the Philippine Helicostylas ; so they may possibly 

 have been originally present and rubbed off of the type of grayanus. 

 The teeth are far more strongly developed than in M. odontostomus. 



M. PAULISTUS Pilsbry & v. Ihering. PI. 13, figs. 93, 94. 



Shell lengthened fusiform ; rather solid ; reddish chestnut, with 

 irregular, lacerated and somewhat zigzag, obliquely longitudinal, 

 hydrophanous, cream-tinted, speckled streaks. Surface dull, very 

 minutely but sharply striated in the direction of growth lines, a strong 

 lens showing much more minute and superficial, dense, spiral stria- 

 tion, the apical whorls spirally lirate. Whorls 6, the first turned in, 

 the rest rather rapidly and regularly increasing, moderately convex, 

 the last becoming free at the aperture, compressed behind the outer 

 lip, the trench there impressed by five unequal pits ; base pinched 

 into an acute, produced, nearly straight, keel ; and behind the colu- 

 mellar lip there are two pits and a deep axial pit, with another shal- 

 low pit behind the elevated parietal wall. Aperture purplish within, 

 slightly oblique, narrow, irregularly oblong, obstructed by eight plici- 

 form teeth and a strong, deep-seated columellar fold ; the teeth being 

 arranged as in M. grayanus fasciatus, except that the palatal folds 

 are not twisted, the lower one runs obliquely upward, and there is a 

 small interpalatal fold in the middle of the outer lip between the 

 upper arid lower palatals. Peristome continuous, white, reflexed 

 throughout. 



Length 37, diam. 12 mill.; length of aperture (including peri- 

 stome) 15, width 8 mill. 



Brazil : Iguape, prov. S. Paulo (Dr. H. von Ihering). 



0. {Macrodontes) paulista P. & v. I., Proc. Acad. Nat. Sci. Phila., 

 1898, p. 471 (Dec. 12, 1898). 



This most beautiful of the Macrodontes species has hydrophanous 

 cuticular markings somewhat like Auris hauxwelli (Crosse). It dif- 

 fers conspicuously from the well known M. odontostomus in the more 



