ODONTOSTOMUS. 55 



or malleate by the' wrinkles ; glossy. Spire long, with convex out- 

 lines. Whorls 8J 9, slightly convex, separated by a white-edged 

 suture ; the last whorl strongly carinate at the base, the keel defining 

 a flattened basal area with a median groove. Aperture oblong, 

 white and showing the median dark band inside, slightly oblique, 

 obstructed by 6 or 7 folds; a compressed, entering parietal lamella, 

 a larger oblique columellar lamella, a much smaller basal fold, and 

 three compressed folds within the outer lip, the median (upper 

 palatal) fold largest, the others quite small ; sometimes an additional 

 suprapalatal fold being added near the upper end of the lip. Peri- 

 stome rose-tinted or white, very broadly expanded. 



Length 28, diam. nearly 8, length of aperture 10 mill. 



Length 22, diam. 7.8, length of aperture 8 mill. 



Length 24, diam. GJ, length of aperture 7 mill. (Pfr.). 



Length 22, diam. 6 mill. (Menke). 



Brazil : Rio Janeiro (Dr. Varnhagen); Province Sao Paulo (v. 

 Ihering). 



Scarabus fusiformis MENKK, Syn. Metli. Moll., p. 78 (1-828); 

 edit. 2, p. 131. Bulimus vermicidatus Mke. in litt., PFR., Zeitschr. 

 f. Malak., 1849, p. 175; Conchyl. Cab. p. 260, pi. 70, f. 19, 20; 

 Monogr. iii, p. 368 ; iv, 436 ; vi, 76. 



Allied to 0. punctatissimus, but differs in being more roughly 

 sculptured, and wanting the fold developed between the lower palatal 

 and basal folds in that species. It varies widely in form from sub- 

 cylindric to conic, and also in size. Menke's reference of this species 

 to the genus Scarabvs w?.s not unnatural for the time. His specific 

 name fusiformis was subsequently changed, apparently at Pfeiffer's 

 suggestion, on account of the Bulimus fusiformis described by 

 Menke on a previous page of the Synopsis. This earlier B. fusi- 

 formis is now a Buliminus. 



This species may be the Odontostomus vermiculatus of Beck, Index 

 Molluscorum, p. 54 ; but as that is an absolutely nude name, its 

 identity remains uncertain, and is a matter of no consequence. 



Figures 32, 33 are Pfeiffer's illustrations, probably drawn from 

 Menke's type. Fig. 31 is a specimen from Os Perus, Figs. 34, 35 

 from Sao Paulo, sent by Dr. von Ihering. 



O. TUDICULATUS (Martens). Unfigured. 



Shell rimate-perforate, fusiform, lightly malleate-wrinkled, brown- 



