OOONTOSTOMUS. 63 



pressed and entering, and the columellar lamella and upper palatal 

 fold stand vertically. The lip is very broadly reflexed, and there is 

 a dark streak behind it. The species are from Bahia province. 



Teeth are said to be wholly wanting in some specimens of 0. pan- 

 tagruelinus. 



Key to species of Odontostomus a. str. 



1. Large species with irregular or mesh-wrinkled surface and con- 

 vex, strongly recurved lip. 



a. Teeth 4 or 5 ; suture bordered with a row of white bosses ; 

 lip white. leucotrfitna. 



a}. Suture not so decorated ; teeth serrate, rarely absent. 



pantagruelinus. 



2. Smaller, with coarsely shriveled surface, arid pink, flatly 

 spreading lip. exesus. 



O. PANTAGRUELINUS (Moricand). PI. 8, figs. 82-85. 



Shell rimate-perforate, fusiform, solid and strong, ashen-white 

 with flesh-colored lines and spots, and a broad purple-black stripe 

 behind the peristome. Surface rather dull, densely and coarsely 

 rugose, the wrinkles low, anastomosing, forming shallow long pits ; 

 a series of such impressions often bordering the suture. Spire 

 straightly turreted, the apex obtuse, but in adults one or two whorls 

 are frequently self-amputated. Whorls 8^, convex. Aperture 

 vertical, ear-shaped, brownish within, obstructed by large serrate 

 teeth : an obliquely entering, high, tongue-shaped parietal lamella, 

 butressed on its colurnellar side ; an erect, long, plate-like columellar 

 lamella ; a basal or subcolumellar fold or lamella, which mpy be 

 either simple and acute, or compound and serrate ; an entering, 

 compressed lower palatal fold, and a large, elongate, usually serrate 

 upper palatal barrier, above which a few suprapalatal denticles are 

 usually developed. Peristome white, tinted within, very broadly re- 

 flexed and recurved, the face convex. 



Length 65, diam. 26, length of aperture 32 mill. 



Length 68, diam. 23, length of aperture 32 mill. 



Length 56, diam. 19, length of aperture 28 mill. 



Brazil : Prov. Bahia (Blanchet). 



Scarabus labrosus MENKE, Synopsis methodica molluscorum, p. 

 78 (1828); Second Edition, p. 130 (1830); description insufficient 



