106 AU.RIS. 



The minute sculpture of bernardii, as shown in fig. 8, differs from 

 that of the allied species, but occasional specimens of chrysostoma 

 seem to offer an approach to it in pattern. The species is a critical 

 one, not to be hastily judged on the evidence of the two specimens 

 known to Pfeiffer, and the single one before me, these being so far as 

 I know, the only examples on record. 



A. ILLHEOCOLA Moricand. PI. 39, fig. 19. 



Shell perforate, lengthened ovate-conic, thin or moderately solid. 

 Fleshy-pink, closely and indistinctly striped or netted with a slightly 

 darker shade, the spaces between folds on the spire dark. Surface 

 conspicuously and densely granulated except on earlier whorls, the 

 granules lighter, elongated, and readily visible with the naked eye. 

 Whorls of the spire with a series of conspicuous folds below the 

 sutures, which are finely crenulated. Whorls 5. 



Aperture ovate, subvertical, white or nearly so inside (but in 

 immature shells showing conspicuous brown stripes) ; lip broadly re- 

 flexed, its face convex ; white, with a yellow outer border, sometimes 

 very pale ; no trace of a flange on inner edge of lip, and the columella 

 curves into basal lip without any indication of a notch. Columella 

 white, convex and twisted ; parietal wall white within, bordered 

 by a wide black band. 



Alt. 59, diam. 31 mill. 



Ilheos, Province of Bahia, Brazil. 



Helix (Cochlogena) rhodospira var. illheoeola MORICAND, Mem. 

 Soc. Phys. et Hist. Nat. de Geneve, vii, p. 428 (183G).Bulimus 

 illheoeola PFR., Zeitschr. f. Malak., 1845, p. 156 ; Conchyl. Cab., p. 

 194, pi. 56, f. 10; Monogr., ii, p. 92; iii, 371 ; iv, 439; vi, 77. 

 Bulinus melanostomusvar. f SOWB., Conchol. Illustr.,f. 79. Bulimus 

 melanostoma REEVE, Conch. Icon., pi. 33, f. 203b. DESK, in Fer., 

 pi. 152, f. 3. 



Differs from all the preceding species in the coarser and more 

 regular granulation, more lengthened contour, and more roseate suf- 

 fusion. There is no trace of an inner lip-flange, nor of a basal notch. 

 The subsutural folds do not often extend as far down as the body- 

 whorl ; and the color pattern is subdued in tone, much less distinct 

 than in chrysostoma and bernardii. 



Pfeiffer records a specimen measuring alt. 69, diam. 33 mill. ; last 

 whorl more ventricose. Is the assigned alt. an error? 



