TOMIGERUS. 107 



This species differs from others in the depressed spire, more dis- 

 torted last whorl, corrugated surface and coloration. It is said by 

 Spix and Blanchet to be rare. Four specimens before me vary in 

 the color bands, but are otherwise alike. 



T. GIBBERULUS (Burrow). PL 7, figs. 74, 75, 76. 



Shell semiconic, subarcuately rimate, rather solid, nearly smooth ; 

 whitish, ornamented with wide brown bands. Spire conic, the apex 

 blackish ; whorls 5, the upper ones a little convex, the last longer 

 than the spire, angular posteriorly, flattened on the apertural face, 

 carinated at the base, ascending in front, having pits behind the 

 aperture. Aperture vertical, subtriangular, somewhat effuse toward 

 the right side, maculated with violaceous, obstructed by seven teeth : 

 two on the parietal wall, the upper one oblique, long and serrate, the 

 other transverse ; three on the basal margin, their interstices purple- 

 black ; two on the outer margin, the upper one largest, long, the 

 other compressed, superposed upon it. Peristome simple, white, 

 broadly expanded, at the base reflexed. Alt. 13-14, greater diam. 

 20, lesser 11 mill. (Pfr.~) Brazil: Pernambuco (Burrow). 



Helix gibberula BURRO AV, Elements of Conchology, p. 188, pi. 27, 

 f. 3 (1815); second edition, 1825, p. 177. FERUSSAC, Prodr., p. 60. 



Tomigerus gibberuJus PFR., Zeitschr. f. Malak. 1849, p. 66; 

 Monogr. iii, p. 284; Conchyl. Cab. Helix, pt, 2, p. 7, pi. 124, f. 1-3. 



Tomigerus principalis SOWB., P. Z. S. 1849, p. 14, pi. Moll. 2, 

 f. 6, 7. 



T. TURBINATUS (Pfeiffer). PI. 7, figs. 71, 72, 73. 



Shell compressed-turbinate, imperforate, with a long, straight 

 umbilical suture, pale brown and dull except in front, where it is 

 somewhat glossy and corneous. Surface sculptured with slight 

 growth-wrinkles only. Spire elevated, conic ; whorls 5, convex, the 

 last transversely dilated but not much distorted, ascending in front, 

 deeply constricted and grooved behind the basal lip, and with a long, 

 oblique impression behind the outer lip. Aperture slightly turned 

 upward, nearly closed by the teeth, of which there are three lamellae 

 on the parietal wall, three on the baso-columellar margin, and a 

 single large obliquely entering plate-like fold within the outer lip, 

 bifid at its upper extremity. Lip expanded, broadly flaring, pale 

 flesh-tinted. Alt. 10, greater diam. 12, lesser 7^ mill. 



Brazil : Province of Bahia (Blanchet). 



