42 HELIX. 



H. LIRATA, Couthony. PI. 9, figs. 72-74. 



Umbilicated, brownish corneous ; whorls 4, closely lirate, 

 suture subchanneled. Diam. 5 mill. 



Tierra del Fuego. 

 H. COPPINGERI, Smith. PI. 8, figs. 70, 71. 



Rather narrowly umbilicated, closely costate, the interstices 

 with microscopical spiral lines, pale luteous, suture deep ; whorls 



3J, slowly enlarging. Diam. l - 6 mill. 



Patagonia. 

 H. MAGELLANICA, Smith. PI. 9, figs. 75-77. 



Umbilicus wider than in the preceding species, bod}^-whorl 

 narrower beneath, but broader above ; whorls only 2^, more 

 rapidly increasing, the riblets finer, more slender and numerous, 



no spiral sculpture. Diam. 1'6 mill. 



Patagonia. 

 H. EXCISA, Pfr. PI. 9, fig. 78. 



Widely umbilicated, rather thin, closety arcuately costulated, 

 diaphanous, light yellowish, suture impressed ; whorls 4, a little 

 convex, slowly enlarging, the last not descending, s undepressed, 

 base narrower ; aperture small. Diam. 4*5 mill. 



Santa Ana, New Granada. 



H. BRYOPHILA, Phil. PI. 9, figs. 79, 80, 



Widely, deeply umbilicated, thin, shining, with close, elevated, 

 thin, radiating stride; light corneous, suture deep; whorls 4^, 

 convex, slowly increasing, the last a little wider than the penul- 

 timate. Diam. 2'5 mill. 



Chili. 

 H. CHILTENSTS, Mu'hlfeldt. PI. 9, figs. 81-83. 



Moderately umbilicated, thin, pellucid, brownish corneous, 

 slightly rugose and very minutely granulated ; whorls 4, convex; 



aperture subcircular. Diam. 4'5 mill. 



Chili. 

 H. EPIDERMIA, Anton. PI. 9, figs. 84-86. 



Widely, deeply umbilicated, brownish, obliquely longitudin- 

 ally costulate ; whorls 5, moderately increasing, a little convex. 



Diam. 5 mill. 



Valparaiso, Chili. 



According to Deshayes the costulations are subinembrana- 

 ceous and the interstices are thinly striated. 



