76 BULIMULUS-RHINUS. 



above, partly covering the umbilicus ; columella concave ; parietal 

 callus thick or thin. 



Alt. 41, diara. 28, alt. of aperture 20 mill. 



Alt. 36, diam. 26, alt. of aperture 18'5 mill. 



Alt. 36, diam. 23, alt. of aperture 16 mill. 



Alt. 33-5, diam. 21 mill. 



Brazil: Bahia (Blanchet, von Ihering); Cor cobado, at Rio Janeiro 

 (Paz.). 



Helix (Cochlogena) heterotricha MORICAND, Mem. de Phys. et 

 Soc. d'Hist. Nat. Geneve, vii, pt. 2, p. 430, pi. 2, f. 5, 6 (1836). 

 Bulimus heterotriclms DESH. in Lam., Anirn. s. Vert., viii, p. 241 ; 

 and in Fer., Hist., ii, p. 16, pi. 157, f. 1, 2. BECK, Index, p. 51. 

 REEVE, Conch. Icon., pi. 32, f. 199. PFR., Monogr., ii, p. 116 ; vi, 

 p. 28. HIDALGO, Journ. deConchyl., 1870, p. 59. 



Doubtful synonyms: Helix tumida GMEL., Syst. Nat. (13), p. 

 3668, based on Gualtieri, pi. 5, f. Q. Helix scobinata FER.? ac- 

 cording to Pfeiffer. 



A larger and stronger species than B.velutinohispidus, with more 

 whorls, a longer and more conic spire, and less inflated body-whorl. 

 According to Moricand the animal is entirely black. His measure- 

 ments, alt. 55, diam. 32 mill., are greater than in any of the shells 

 before me. 



Var. subtenuis n. v. PI. 13, figs. 2, 25 ; pi. 15, f. 19. 



This is a smaller, thinner form, with shorter spire of scarcely 6 

 whorls, lighter corneous brownish color, and proportionally larger 

 aperture. The peristome is less developed. 



Alt. 28, diam. 20, alt. of aperture 15 mill. 



Alt. 29, diam. 21, alt. of aperture 15'5 mill. 



B. VELUTINOHISPIDUS (Moricand). PI. 13, fig. 3 ; pi. 15, fig. 20. 



Shell perforate, globose, with short, conic spire, thin, light brown- 

 ish corneous or olivaceous, generally more or less covered with dirt, 

 except on the front of the body-whorl, the surface roughened by 

 dense spiral lines of short hairs and more spaced series of stiff bris- 

 tles, often lost in the adult shell (pi. 15, fig. 20). Spire short, conic, 

 the apex obtuse, nepionic whorls very shallowly and finely waved 

 in irregular, indistinct pattern. Whorls 5?, quite convex, the 

 sutures well impressed ; last whorl much inflated, descending grad- 

 ually in front. 



