456 PROCEEDINGS OF THE NATIONAL MUSEUM VoL, 113 
1899 Pilsbry (Manual of conchology, ser. 2, vol. 12) had used it in 
Shuttleworth’s sense; later (Land mollusca of North America, vol. 2, 
pt. 1, p. 29, 1946) he adopted Rehder’s opinion, which is correct, and 
placed Bulimus zebra as type of Orthalicus Beck, 1837, not of ‘“Ortha- 
licus” Beck, in Gray, 1845 (type H. sultana). 
Sultana sultana (Dillwyn) 
Helix sultana Dillwyn, A descriptive catalogue of Recent shells, vol. 2, p. 290, 
SWZ 
Orthalicus sultana, Pilsbry, Manual of conchology, ser. 2, vol. 12, p. 188, 1899. 
Type locality: The Guianas. 
Numerous specimens examined in the four museums (USNM, 
MCZ, CM, and MACN) indicate that this species had a wide and 
curious distribution: Guianas, northern Brazil, eastern Peru, and 
northern Bolivia. 
I am inclined to think that Orthalicus meobambensis Pfeiffer is a 
synonym, although it may be distinguished as the race or subspecies 
mentioned by d’Orbigny as occurring in northern Bolivia. 
U.S. GOVERNMENT PRINTING OFFICE: 1962 
