128 LAURIA, AZORES ISLANDS. 



The lamellae penetrate more deeply than in any other 

 Lauriae — about two whorls in L. tesselata. 



55. Lauria tesselata (Morel.). PI. 15, figs. 12 to 15. 



The shell is openly perforate, ovate-cylindric or cylindric- 

 eonie, the apex obtuse; irregularly costulate, slightly glossy 

 corneous-buff or tawny, tessellated with squarish chestnut 

 spots. 8 to 9 flat whorls, the last ascending, at the base 

 angularly compressed and pitted. Suture impressed. Aper- 

 ture trilobed, narrowed by 6 folds: 3 [error for 2J on the 

 parietal wall, the right one [angular lamella] strong, pro- 

 jecting, joined by a callus with the lip; the left one [parietal 

 lamella] further in, smaller; 2 lamellae on the columella, the 

 upper one larger; 2 thread-like folds trending spirally in 

 the palate. Peristome a little expanded, calloused, the right 

 margin sinuous, columellar margin reflected. Length 4, 

 diam. 2 mm. (Morel.) 



Azores: Santa Maria, in the mountains of the interior 

 ''Morelet), abundant in the laurel and Myrica woods. 



Pupa tesselata Morelet, Notice sur l'Hist. Nat. des Acores, 

 1860, p. 204, pi. 5, f. 6.— Pfr., Monogr. viii, 390.— Wollas- 

 ton, Test. Atlant. p. 46. 



This species is strongly characterized by its numerous flat 

 and rather closely coiled whorls and spotted color-pattern. 



The angular lamella penetrates 2 whorls inward, and ex- 

 cept near the aperture its edge is irregularly serrate (pi. 15, 

 fig. 15). The parietal lamella is less than one whorl long. 

 The columellar lamella also penetrates two whorls, within, 

 and in immature shells it is more prominent than the supra- 

 columellar lamella, though the latter is larger at the aperture. 

 The two palatal folds are thin and rather low, the lower- 

 palatal more immersed than the upper. 



Length 4.2, diam. 1.9 mm. ; 9% whorls. 



Length 3.5, diam. 1.9 mm.; 8% whorls. 



The neanic stage (pi. 15, fig. 12) shows a prominent angular 

 lamella. There are two on the columella, the lower one, or 

 columellar lamella proper, being more prominent. Within 

 the base there are numerous low, curved radial laminae, their 



