HELIX. 47 



[Subsection STEPHANODA, Albers, I860.] 

 H. ARCTISPIRA, Pfr. PL 5, fig. 85. 



TJmbilicated, depressed, subdiscoidal, closely costate, whitish, 

 under a thin brownish epidermis ; whorls 5J, convex, very 

 narrow ; umbilicus wide, perspective. Diam. 2*5 mill. 



Ins. Juan Fernandez. 

 H. TESSELLATA, Miihlf. PI. 5, fig. 86. 



Moderately umbilicated, discoidal, thin, light corneous, with 

 undulating chestnut strigations ; whorls 6-7, flattened, very 

 narrow, the last subinflated below. Diam. 4 mill. 



Ins. Juan Fernandez. 

 H. contortula, Fer., is a synonym. 



H. SELKIRKT, Smith. PI. 5, fig. 87. 



Narrowly umbilicated, thin, pale, spotted above with red, 

 irregularly streaked beneath with a lighter tint, with close-set, 

 hair-like striae; whorls 6-7, very narrow, slowly increasing, 

 convex, suture narrowly channeled ; last whorl a little constric- 

 ted above the middle. Diam. 4 mill. 



Ins. Juan Fernandez. 



Whorls broader, and umbilicus more open than in H. tessellata; 

 differs also in the constriction of the last whorl. 



H. QUADRATA, Fe'r. PI. 5, fig. 88. 



Widely, perspectively umbilicated, very closely slightly 

 striated, thin, diaphanous, yellowish, flamed with chestnut and 

 with one to three bands ; whorls 5J, somewhat convex, rapidly 

 enlarging. Diam. 7 mill. 



Juan Fernandez. 



Yar. ,9. Yellowish, obscurely zoned with reddish brown. 



H. Kingi, Pfr., is a synonym. 



H. CEROIDES, Pfr. PI. 5, fig. 89. 



Moderately umbilicated, thin, .very minutely striated, gray- 

 waxy, suture rather deep ; whorls 4, slightly convex, slowly 

 increasing, the last not descending, rounded. Diam. 5 mill. 



Ins. Juan Fernandez. 



H. PUSIO, King. (Unfigured ?=quadrata.) Ins. Juan Fernandez. 



