98 MADEIRAN SPECIES OF LAURIA. 



beneath damp moss; extreme head of the Ribeira de Joao 

 Delgada and found later on the north side of the Pica 

 Casado, at the head of the Boa Ventura (Lowe and Wol- 

 laston). 



Pupa concinna Lowe, Ann. Mag. N. H. (2), ix, 1852, p. 

 277.— Kuester, Conchyl. Cab. p. 181, pi. 21, f. 24, 25.— 

 Albers, Malac. Mader. p. 65, pi. 16, f. 11, 12.— Pfr., Monogr. 

 iii, 544 ; vi, 310.— Wollaston, Test. Atl. p. 219. 



This species is nearest to L. laurinea in shape and arma- 

 ture of the aperture, but there is no callus between angular 

 lamella and lip-insertion, and the fine striation is entirely 

 different. Wollaston writes : " It is darker as well as more 

 densely and coarsely striated than that species [laurinea] > 

 and its two ventral plaits [lamella of parietal wall] are more 

 flexuose and oblique, or less vertical (causing the sinus to 

 be even still more closed in), the external one [angular 

 lamella] being also more completely unconnected by even a 

 rudimentary callosity with the angle of the lip." L. concinna 

 differs from L. loweana and cassidula by the more narrowly 

 cylindric form, by the absence of a supra-columellar lamella 

 etc. 



A specimen about half grown has 6 radial basal folds (pi. 

 11, fig. 5). One of the full-grown shells retains a single 

 radial fold within the base on the left side. 



32. Lauria laurinea (Lowe). PI. 11, figs. 8. 9. 



The shell is oblong-cylindric, olivaceous-buff, with a chest- 

 nut band median on the last whorl, another below the suture. 

 Surface somewhat glossy, most minutely striate on the spire, 

 the last whorl smoothish, whorls slightly convex, the last com- 

 pressed below, narrowly rounded at base. The aperture is 

 truncate-oval, 5-plicate. Angular lamella very high and 

 thin, oblique, flaring outward, more or less fully connected 

 with the lip-insertion by an uneven or interrupted callus. 

 Parietal lamella small, also oblique. Columella!* lamella 

 horizontal, no supracolumellar. Subcolumellar very small, 

 immersed. Lower-palatal fold rather immersed, high. 

 Peristome a. little reflected, brownish, bearing a tooth above. 



