64 STREPTAXIS. 



S. HYLEPHILA, Orb. PL 12, figs. 33, 28. 



Thin, diaphanous, striated, smooth below; white; whorls 6; 



lip thickened. Diam., 8 mill. 



Bolivia. 



S. ochthephila, Orb. (fig. 28), is a minor variety ; diam., 6 mill. 



S. BOUNOBOENA, Orb. PL 12, fig. 34. 



Moderately solid, obliquely striate ; whorls 5J ; umbilicus nar- 

 row ; lip callous within ; greenish white, vitreous. 



Diam., 9 mill. 



Bolivia. 

 S. OMALOMORPHA, Orb. PL 12, fig. 14. 



Thin, striulate, white under a yellowish epidermis ; whorls 7 ; 



peristome simple. Diam., 19-25 mill. 



Bolivia. 

 S. FLORA, Pfeiffer. PL 27, fig. 4. 



Depressed orbicular, thin, translucent, lightly striated above, 

 smooth below ; umbilicus moderate, perspective ; lip thin, sharp ; 

 greenish yellow, interior pearl}' white. Diam., 28 mill. 



Andes of Columbia. 



Pfeiffer places this species in Streptaxis, but its position here 

 appears to me somewhat doubtful. 



S. CUZCANA, Philippi. PL 13, figs. 46, 47. 



Depressed ; striulate above, smooth below, thin, diaphanous, 

 shining ; yellowish brown ; whorls 5-6 ; lip thin, simple, subemar- 

 ginate in the middle. Diam., 16-19 mill. 



Cuzco, Peru; Baeza, Ecuador. 



Helix Baezensis, Hidalgo, is a synonym. 



S. VITRINA, Wagner. PL 13, figs. .38-40. 



Subdiscoidal, striulate, pellucid, very shining, yellowish cor- 

 neous ; spire plane, subcxcavated ; whorls 4, the last wide ; peris- 

 tome simple. Diam., 15*5 mill. 



Southern Brazil. 



This species bears the names of Helix circumplexa, Fer., H. 

 valvseformis, Nyst, and Solarium imperforatum, Spix ; the young 

 shell is Helix nana, Wagner, and Solarium pygmseum^ Spix. 



