ORTHALICUS. 189 



white); columella thin, arcuate, white (in a variety nearly straight and 

 whitish above only); parietal wall with a brownish callus, usually 

 white within (but in the variety with a broad blackish-chestnut cal 

 lus throughout), wanting in young shells. 



Alt. 84, diam. 54, longest axis of aperture 56 mill, (var.) 



Alt. 53, diam. 39, longest axis of aperture 38 mill. 



Alt. 70, diam. 50 mill. 



La Poule Sultane, FA v ANNE, Cat. Syst. p. 13, pi. 1, f. 47 

 Helix gallina sultana CHEMNITZ, Conchyl. Cab. xi, p. 281, pi. 210, f. 

 2070, 2071 (1795). Bulimus gallinasultana LAM., An. s. Vert. vi,p. 

 117 (1822) WAGNER, in Spix, Testae. Bras. p. 9. ORBIGNY, 

 Voy. dans rAme>. Me>id. p. 265 REEVE, Conch. Syst. ii, pi. 173, 



f. 7 ; Conch. Icon. pi. 32, f. 198 KUSTER, Conchyl. Cab. p. 8, pi. 



8, f. 1, 2. TROSCIIEL, Archiv fur Naturg. 1849, i, p. 228, pi. 4, f. 

 2 (dentition) ; Reisen in Britisch-Guiana (Schomburgh), iii, p. 547. 

 HUPE in Castelnau, Exped., p. 38 (1857). DROUET, Moll. Terr, 

 et Fluv. Guyane Francaise, p. 66 (1859) PFR., Monogr. ii, p. 145 ; 



iii, 381 Succinea gallina- sultana PFR., Symbolae ad Hist. Hel., ii, 



p. 131 (1841) Orthalicus gallinasultana SHUTTLEWORTH, Notitiae 



Malac. i, p. 59 (1856.) PFR., Monogr. iv, p. 587; vi, p. 198, viii, 

 p. 261. BINNEY, Ann. Lye. Nat. Hist, of N. Y. xi. (1874), p. 38, 

 pi. 4, f. A-F(anatomy) ; Ann. N. Y. Acad. Sci. iii (1884), p. 128, 

 pi. xv, f. N (jaw), pi. xii., f. C (dentition). STREBEL, Beitr. Mex. 

 Land- und Siisswasser-Conch. v. p. 2, pi. xi, f, 10 (genitalia) 

 MARTENS, Conchol. Mittheil., p. 158. Sultana gallinasultana 

 MILLER, Malak. Blatt. xxv, p. 186 COUSIN, Bull. Soc. Zool. de 

 France, xii, 1887, p. 196. 



Helix sultana, DILLWYN, Descriptive Catal., ii, p. 920 (1817). 

 FER., Prodr., p. 52; Histoire, pi. 117, f. 2. WOOD, Index Testa- 

 ceologicus, pi. 33, f. 75. ORBIGNY, Mag. de Zool. 1835, p. 8. 

 Achatina sultana SWAINS., Exotic Conchology, p. 26, pi. 10 (1841). 

 Orthalicus sultan BECK, Index Moll., p. 59 (1837). Achatina 

 pavonina SPIX, Testae. Bras., pi. 9, f. 1 (1827) Bulimus princeps 

 POTIEZ & MICHAUD, Galerie des Moll., i, p. 151, pi. 14, f. 29. 

 Orthalicus gallinasultana and 0. pavoninus H. & A. AD., Gen. Rec. 

 Moll., ii, p. 154. 



The Guianas: All over British Guiana, on tree trunks (Schom- 

 burgk); around Cayenne, French Guiana (Eyries). N.-E. Brazil: 

 on the Rio Tocantins, in the region of Baiao, 5 meters above the sea 



