BULIMULUS, 147 



Section Rhinus Alb. 

 B. SCOBINATUS (Wood). Vol. xi, p. 77. 



Reported from Bahia by Paz, Hidalgo, J. de C., 1875, p. 131. 



B. ARGENTINUS Ancey. 



Shell globose-ovate, rather solid, openly perforate, a little glossy, 

 green or brown-buff, the last whorl encircled by a median, narrow, 

 pale zone. Spire ovate-conoid, short, somewhat obtuse. Whorls 6-J, 

 a little convex, regularly increasing, separate by an impressed suture, 

 slightly striatulate, seen under a lens to be very obsoletely and closely 

 sculptured with waved spiral lines ; the last whorl ovate, ventricose. 

 Aperture almost vertical, oval, tapering and angular above; peri- 

 stome somewhat thickened, a little expanded, whitish, the margins 

 remote, joined by a thin, glossy callus, the columellar margin broadly 

 dilated over the well-marked perforation. Length 19-21, diam. 12^- 

 14, alt. apert. 8^-11 mill. (Ancey). 



Argentina: Gualeguaychu, Province of Entre-rios (L. de Vries). 



Bulimulus (Rhinus") argentinus ANCEY, Le Naturaliste, April 15, 

 1901, p. 92. 



This species, allied to B. durus Spix, has a more shortened and 

 compact contour. The apical sculpture has not been described, so 

 that its position is uncertain. It may belong to typical Bulimulus 

 near B. rushii, to Rhinus or to Protoglyptus. 



Section Protoglyptus (Manual xi, p. 84). 



B. MONTIVAGUS (Orbigny). Vol. xi, p. 90. 



Mr. Ancey (Le Nat. 1901, p. 92) thinks that B. montivagus Orb. 

 was based upon several distinct forms, though he admits that the 

 data available are insufficient to prove that view. In case the form 

 from Corumba, Matto Grosso proves distinct from Orbigny's, he pro- 

 poses for it the name B. cutisculptus. This form has been figured 

 on my plate 14, f. 14, 15, of Vol. XI. I do not see the necessity for 

 a new name until the matter can be adequately investigated. 



Var. chacoensis Ancey. Shell imperforate, elongate, rather thin, 

 a little shining, oblong, the apex acute ; grayish, darker, rufous 

 brown at the summit, the rest variegated with narrow brown streaks, 

 with narrow, less conspicuous gray ones interposed ; lightly sculp- 

 tured with growth-lines which are not very much impressed, but are 



