312 AMERICAN JOURNAL 



6. Aglaja exarata, Pfeiffer. 



Plate 5, figure 11. 

 Depressed-conical ; spire short, conical, apex acute ; whorls 

 7, rugose, malleated, slightly convex, the last wide, slightly 

 descending at the aperture ; aperture oblique, widely lunar, 

 lip a little thickened, white, a little reflected below ; umbilicus 

 moderate ; brownish, with a chestnut band. 



Diam, 30, height 16 mill. 



California. 



Dr. Newcomb mentions a variety of a creamy-white color, 

 without bands. 



7. Aglaja Ayresiana, Newcomb. 



Rounded-trochiform; whorls 7, slowly increasing, convex, 

 the first ones superiorly with many rib-like striae, and nume- 

 rous spiral lines, deeply impressed ; inferiorly pale, and with 

 minute decussating striations ; suture well marked ; aperture 

 roundly ovate ; lip a little expanded; umbilicus partly closed. 

 Yellowish-white, with a broad black band. 



Diam. 22, height 15 mill. 



Nootka Sound, Northern Oregon. 



8. Aglaja Nickliniana, Lea. 



Plate 5, figure 12. 

 Conic-globose, rather thin ; spire elevated ; whorls 6, mode- 

 rately convex, the last ventricose, finely granulated, polished ; 

 aperture rounded, forming two-thirds of a circle, lip a little 

 expanded above, more so below ; base depressed at centre, the 

 umbilicus small and party covered by the lip. Light yellow- 

 ish-brown, with a brown band. 



Diam. 21, height 18 mill. 



California. 



Dr. Newcomb believes H. redemita to be a variety of this 

 species. 



