STKOPIIOCHEILUS. 117 



the columellar lip is distinctly dilated above. In S. erythrosoma it is 

 narrower. 



From the existing data I conclude that the original "Helix pudica" 

 of Miiller was either a small individual of S. almeida Spix, or a dis- 

 tinct species, not yet rediscovered, closely allied to almeida. For the 

 present, it may be best to accept the former alternative. In support 

 of this conclusion, I figure the smallest individual before me (pi. 17, 

 fig. 41) for comparison with Chemnitz's figures (f. 39, 40). 



The reference to " Malak. Bl., 1857, p. 179," in third line of refer- 

 ence par&graph on p. 7 of vol. x, should be deleted. The references 

 to Miiller, Gmelin, Bruguiere, Chemnitz and Dillwyn belong to S. 

 pudicus as restricted above to the original small form. "S. almeida" 

 differs from S. pudicus chiefly in the larger size and in having a 

 whorl less, judging from the published account of the latter. The 

 figures in vol. x pertain to " almeida." 



It was evidently erythrosoma which Martens reported from Rod- 

 ersburg (vol. x, p. 194). 



S. ERYTHROSOMA Pilsbry. (Vol. x, p. 10.) PI. It, figs. 42-45. 



This species differs from S. pudicus, as figured by Chemnitz, in the 

 broad contour, compressed from face to back, and humped " on 

 the left side (while in pudicus the form is slender and the curve of 

 the left side is even) ; in the concave and narrow columellar lip, 

 merely rimate axis, not openly perforated, as in pudicus, and in other 

 characters mentioned in my original description. 



The specimen described and figured by Pfeiffer (pi. 17, fig. 44, 45) 

 as B. pudicus was smaller than any I have seen, length 44J mill. 

 Others from Iguape, sent by Dr. H. von Ihering (pi. 17, figs. 42, 43), 

 measure : length 59, diam. 31, longest axis of aperture 32 mill., and 

 length 50^, diam. 28, aperture 29 mill. 



A perfect specimen is covered with slightly olivaceous yellow 

 cuticle which appears of a deep reddish, almost mahogany color, over 

 the rose-colored parts of the shell. There are nearly 2 post-nepionic 

 whorls, the nepionic portion being sculptured with close, slightly 

 oblique, rib-striae. 



Southern Brazil: Iguape, prov. S. Paulo (v. Ihering); Rodersberg 

 (Martens). 



Bui. pudicus Miiller, PFR., Malak. Blatt. iv, 1857, p. 179, 180, 

 pi. [4], f. 1, 2. MARTENS, Malak. Blatt. xv, 1868, p. 178. Not of 

 Miiller! S. erythrosoma PILS., Man. Conch, x, p. 10. 



