230 AMERICAN JOURNAL 



Pitys proxima, Garrett. Plate 19, fig. 24. 



Shell umbilicate, thin, subdiscoid, subpellucid, coarsely and 

 sharply striated, striae crowded, oblique, sinuous, yellowish horn 

 color, rarely cinereous, adorned with large reddish- brown tessel- 

 lations, which are often luniform, and radiating stripes beneath ; 

 spire flatly convex ; suture deeply impressed ; whorls 4h, convex, 

 regularly and rather rapidly increasing, last one convex beneath, 

 slightly flattened and declivous above the periphery ; umbilicus 

 rather small, deep, one-fifth the diameter of the shell ; aperture 

 diagonal, roundly-lunate ; peristome thin, sinuous, the upper 

 margin receding. 



Diam., 3| mill. ; height, 2 mill. 



Habitat, Rarotonga Id., Cook's Isles. (Coll. Garret and Phila. 

 Acad.) 



A common species lurking under stones and among rotten 

 wood. It was found in several villages. 



Pitys multilamellata, Garrett. Plate 19, fig. 25. 



Shell umbilicate, subdiscoid, thin, subpellucid, closely and very 

 finely ribbed, ribs lammelliform, closer and finer beneath, light or 

 dark horn color, above tessellated with reddish brown, unicolored 

 beneath ; spire flatly convex, apex flat ; suture deeply impressed ; 

 whorls 6^, convex, swollen above, regularly and slowly increas- 

 ing, last one slanting inward from the shoulder ; umbilicus deep, 

 showing the whorls, about one-third the diameter of the shell ; 

 aperture vertical, narrowly luniform, fauces with five nearly 

 equidistant lamella, two on the thin columella, and four on the 

 parietal region ; peristome thin, simple. 



Diam., 3J mill. ; height, 1J mill. 



Habitat, Rarotonga Id., Cook's Isles. (Coll. Garrett and Phila. 

 Acad.) 



A somewhat rare species, found under dead wood in two re- 

 mote valleys. It is of a different type from the preceding spe- 

 cies, allied to Pitys contorta, Per., P. modicella, Fer., and P. 

 sexlamellata, Pfr. 



