42 HELIX. 



H. LTRATA, Couthouy. 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. 1*6 mill. 



Patagonia. 

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



Umbilicus wider than in the preceding species, body-whorl 

 narrower beneath, but broader above ; whorls only 2-J-, 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, closely arcuately costulated, 

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

 convex, slowly enlarging, the last not descending, subdepressed, 

 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 striae ; light corneous, suture deep ; whorls 4^-, 

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

 timate. Diam. 2'5 mill. 



Chili. 

 H. CHILIENSIS, Miihlfeldt. 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, moderate^ increasing, a little convex. 



Diam. 5 mill. 



Valparaiso, Chili. 



According to Deshayes the costulations are subinembrana- 

 ceous and the interstices are thinly striated. 



