64 ODONTOSTOMUS. 



for identification. Helix (Cochlodina) yargantua FERUSSAC, Prodr., 

 Tabl. Syst., p. 02, no. 510 (insufficient desc.). Helix (Cochlodina) 

 paiitagnit'lina MouiCAND, Mem. de la Soc. de Phys. et d'Hist. Nat. 

 de Geneve, vi, p. 542, pi. 1, f. 7 (133); vii, p. 440, with (p. 441) 

 var. major deutata, major edentitla and minor (the latter == O. leuco- 

 trema), viii, p. 142, pi. 3, f. 5 (living animal) Bulimus pentagrue- 

 liinis DESII. in Lam., An. s. Vert., viii, p. 255 (1838); in Fer., 

 Hist. p. 119, pi. 102, f. 1-4. B. panto gruelinus Reeve, Conch. Icon., 

 pi. 38, f. 230. PKK., Monogr. ii, p. 83; iii, 307; iv, 435; vi, 75; 

 Conchyl. Cab. p. 144, pi. 45, f. 3, 4 HIDAI.<;O, Journ. de Conchyl., 

 1S70, u. 51 (reports it from Rio Janeiro, Paz). DOIIKN, Jahrb. 

 1SX3, p. 349. Clat/silia panto rjnii'Uina VILLA, Dispositio System- 



alica Conch, p. 25 Odontostornus punta gruelinus BECK, Index, p. 



54 (1837). H. & A. ADAMS, Gen. Rec. Moll. p. 152. 



Exceedingly variable in the form and number of teeth, as Mori- 

 can d pointed out ; even toothless adult shells occurring occasionally. 

 The, aperture is sometimes placed somewhat askew (fig. 82). 



O. LEUCOTREMA Beck. PI. 8, figs. 77, 78. 



Shell rinmte-perforate, fusiform, light brown variegated by the 

 white wrinkles, which are low, frequently anastomosing, and cut by 

 microscopic spiral stria 1 ; the suture bordered by a row of low white 

 nodules; a purple-black streak behind the lips. Whorls 8. Aper- 

 ture oblong ear-shaped, black-bordered within, obstructed by four or 

 five white teeth : a small entering parietal lamella, a squarish colu- 

 mellar lamella, and within the outer lip a compressed lower palatal, 

 and squarish obliquely-transverse upper palatal fold, sometimes a 

 small fold between them. Peristome snow-white, broadly reflexed 

 and recurved. 



Length 49, diam. 17-19, length of aperture 24-25 mill. 



Length 45 mill. (Moric.). 



Brazil : Prov. Bahia ( Blanche! ). 



Pupa ringens JAY, Catalogue of Rec. Shells, edit. 2, p. [81], pi. 1, 

 f. 1 (1836). Not P. ringens Michaud, 1831. Helix pantagruelina 

 var. wmor Mouic., Mem. Geneve vii, p. 441 (1830). Odontostomtis 

 leucotrema BECK, Index Moll. p. 54 (based upon the preceding). - 

 Bulirmts pantdgruelinus var. t PKK. Monogr. ii, p. 83 DESII. in Fer. 

 Hist. pi. 102, f. 5, 0. B. leucotrema PKR., Zeitschr. f. Malak. 1850, p. 

 109 ; Conchyl. Cat., Bui. p. 145, pi. 15, f. 11-13 ; Monogr. iii, p. 307. 



