AURIS. 103 



Bulimus melastomus SWAINS., Zool. Illustrations, i, pi. 4 (1820). 

 Bulimus melanostomus DESH. in Fer., Hist., p. 66, pi. 152, f. 4, 5 ; 

 in Lam., An. s. Vert., p. 252. JAY, Catalogue, edit. 2, pi. 1, f. 3. 

 PFR., Conchyl. Cab., p. 37, pi. 13, f. 8, 9, 10, 11 ; pi. 5, f. 8, 9 ; Mono- 

 graphia, ii, p. 91 ; Hi, 371 ; iv,439 ; vi, 77. REEVE, Conch. Icon., 

 pi. 33, f. 203c. Smith>P.Z.$. 1884, p. 280. HIDALDO, Journ. Conch. 

 1870, p. 46. Auris melastoma SPIX, Test. Bras. p. 13, pi. 12, f. 1, 

 2. Bulimus listen WOOD, Iiad. Test. Suppl., pl.7,f. 23. B. rhodo- 

 spirus POT. & MICH., Galerie Moll. Mus. de Douai,i, p. 152, pi. 15, 

 f. 1, 2 (1838). Helix rhodospira var. vulgar is MORICAND, Mem. 

 Soc. Phys. et d'Hist. Nat. Geneve, vii, 1836, p. 128, pi. 2, f. 29 (egg). 

 Pachyotus melanostomus BECK, Index Moll., p. 56. Pupa melan- 

 ostoma GRAY, Ann. of Philos. (n. ser.) ix, p. 413. Bulimus struthio- 

 laris MKE., Syn. Meth. Moll. Mus. Menkeano, edit. 2, 1830, p. 26, 

 founded on Spix's figures. Bulla variegata SILVEIR, (where?) teste 

 Menke, I.e. (Cow/r. LISTER, pi. 29,f.27,Buccinumvariegatum,etc.^). 

 Not Bulimus variegatus ~Brug.=Actceon flammeus Gmel. 



Differs conspicuously from A. swainsoni, bernardii and illheocola 

 in the dark lip and aperture. The flange within the outer lip is 

 generally more conspicuous and prolonged upward further than in 

 swainsoni, but there is great variation in this character. Moricand 

 and Reeve have included swainsoni and illheocola as varieties of mel- 

 anostoma. 

 Typical A. melastoma Swains. PI. 39, fig. 17. 



Ground-color of shell white or whitish ; outer lip purplish, with a 

 brown or yellow border ; flange long, extending to upper curve of 

 the outer lip; a denticle at foot of columella. 



Var. brachyplax Pils. PI. 39, fig. 18. 



Ground-color of shell flesh-colored or brownish ; flange much 

 shorter, basal ; no denticle at foot of columella ; subsutural folds obso- 

 lete on body- whorl. Size smaller. Alt. 44, diam. 28 mill. 



As in the case of A. bilabiata, I cannot decide on the merits of the 

 above varietal form, but merely place the facts on record. 



A. CHRYSOSTOMA Moricand. PI. 38, figs. 6, 7. 



Shell perforate, ovate- conic, solid and cretaceous ; whitish with 

 irregular or interrupted longitudinal brown stripes, a pale zone below 

 the periphery, the spire pale fleshy without black spots between the 

 subsutural folds. Surface superficially granular, more distinctly so 



