124 LAURIA, AZORES ISLANDS. 



Section Leiostyla proper. 

 52. Lauria fuscidula (Morelet). PI. 15, figs. 6, 7. 



Shell rimate-perforate, cylindric, rounded apieally, very 

 minutely striatulate, glossy, corneous, buff, banded with 

 brown, or brown with the base buff. 5 whorls, a little con- 

 vex, the last compressed basally. Aperture vertical, ovate- 

 sinuate, narrowed by 5 lamella? : 2 strong, parallel, entering 

 ones on the parietal wall, the right one [angular lamella] 

 emerging, joined to the peristome by an arched callus ; left 

 | parietal lamella | further in. One columellar lamella. 2 

 palatal folds, not reaching the margin, the right one [lower 

 palatal fold ] callous, visible outside, subhorizontal, the left 

 one [basal fold | very short, immersed. Peristome a little 

 expanded, calloused, the margins somewhat sinuate, the right 

 margin thickened above the middle. Length scarcely 3, diam. 

 scarcely 2 mm. (Morelet). 



Azores: " the entire archipelago ", under stones and 

 among dead leaves (Morelet). S. Miguel (specimens of form 

 hr.rodon, received from Morelet). 



Pupa fuscidula Morelet. Hist. Nat. Acores, 1860, p. 202, 

 pi. 5, f. 5. — Drouet, Faun. Acor. 1861, p. 165. — Pfeiffer^ 

 Monogr. viii, p. 377. — Wollaston, Test. Atl. p. 44. 



With the color of L. fasciolata (with which it is found, ac- 

 cording to Morelet), this species differs by its well-developed 

 teeth. The sculpture is far less coarse than in L. rugulosa 

 and L. vermiculosa. 



A barrel-shaped shell, olive-buff with a broad chestnut 

 band in the middle of the last whorl, and occupying the 

 lower half of the preceding whorls, or in other specimens, 

 such as that figured as typical by Morelet, the band spreads 

 over the whole upper surface. In both patterns there is an 

 umbilical spot of brown. 



The angular lamella, strongly connected with the outer 

 lip, projects into the mouth but little more than the parietal. 

 Both are rather short, entering only to a dorsal position. 

 The columellar (and when it is present, the supracolumellar 

 lamella 1 ) enter to about the same point, but the columellar 



