ODONTOSTOMUS. 43 



reflexed; umbilical chink deeply cut. Color greenish-white, the 

 aperture white, surrounded within the reflexed lip with a brown 

 band; apex of the spire brown-black. Length 1 inch, 2 lines, width 

 41 lines [ = = -29x9 mill.], ( Wagner). 



Brazil : Woods on the Solimoes ami J'l/ntg rit-ers, in Aniaxonas 

 Province (Spix). Piquete, prov. Sao Paulo (von Ihering). 



Bulitmis angulatus WAUXER, Test. Bras.]). 14 (1827).. -Steno- 

 stoma pur u SPIX, on pi. 13, f. 3 of same work B. aiiyit/'itns 

 DESHAYES in Lam. An. s. Vert., viii, p. 249. PFR., Conchyl. 

 Cab. p. 1!'.">, pi. ">(), f. 15, 16; Monogr. ii, p. 94; iii, 373; iv, 443; vi, 

 98. REEVE, Conch. Icon., pi. 40, t. 248. Pelekocheilus paru BECK, 

 Index Moll., p. 54 (1837). 



Less slender and elongated than the allied 0. fusijormis. The 

 original description is given above, and the original figure copied on 

 my pi. 9, fig. 8. from these it will be seen that the type was a 

 narrow, straightly turreted shell. The specimen figured by Pfeiffer 

 (pi. 9, figs. G, 7) is somewhat less slender and larger, the figure 

 measuring, length 49, diam. 14, length of aperture 16 mill.; and is 

 described as whitish, ornamented with distant brown streaks; 

 whorls S. 



A specimen from Piquete, prov. Sao Paulo (pi. 9, fig. 5) sent by 

 Dr. II. von Ihering, is still stouter, length 37^, diam. 14, length of 

 aperture 16 mill.; outer lip regularly arcuate, not sinuous below, the 

 columellar margin dilated, straight, columella a little sinuous, 

 slightly prominent near the base, which is a trifle effuse and spout- 

 like. It is distantly streaked with reddish-brown on a pale ground. 



Reeve's figure of angulatus (pi. 9, fig. 4) shows a more robust shell 

 than any of the preceding, with the lips sinuated to form a more 

 distinct anterior ' spout." It seems to connect angulatus with 

 auriscervina. 



Probably a number of sub-species will be defined when more 

 specimens with exact locality data come to hand. It is apparently 

 a widely distributed species in western and southern Brazil ; the 

 narrow typical form having been collected by Spix on the Purus and 

 adjacent Amazon, in the low region of rubber forest, while larger, 

 stouter shells come from the higher lands to the south. The possi- 

 bility of a mistake in the locality given by Spix should be taken into 

 consideration. 



