106 MADEIRAN SPECIES OF LAURIA. 



high as the angular, long. Columellar lamella is strong, 

 slants downward, and emerges to the peristome. There ia 

 a small but distinct and deeply entering supracolumellar. 

 The lower-palatal fold is long, strong and emerging. The 

 lip-tooth is continuous inwardly with a short upper palatal 

 fold. Basal fold well developed and but little immersed. 

 Peristome brown, narrowly expanded, slightly reflected. 



Length 3.25, diam, 1.4 mm. ; 7 whorls. 



Length 3.2, diam. 1.3 mm. ; 7 whorls. 



Madeira: chiefly in the north and Avest; under dry leaves 

 of Sempervivum tabul&forme on rocks, like L. recta; along 

 the whole coast below Sao Vicente, Ribeira da Janella and 

 Porto Moniz, as well as near Feyaa d' Ovelha and Ponta de 

 Pargo ("Wollaston). 



Pupa fusca Lowe, Ann. Mag. N. H. (2) ix, 1852, p. 277. 

 — Kuester, Conchyl. Cab. p. 169, pi. 20, f. 21, 22.— Pfr., 

 Monogr. iii, 558. — Albers, Malac. Mader. p. 66, pi. 15, f. 



37, 38.— Wollaston, Test. Atl. p. 226. 



Smaller than L. recta and macilenta, with a distinct supra- 

 columellar lamella, the whorls more convex, and the striation 

 less oblique, more regular and relatively stronger. 



The sculpture of the last whorl varies; the riblets may be- 

 come more spaced but less regularly on the last whorl ; in one 

 specimen 10 may be counted in 1 mm. on the face. In others 

 the sculpture is weaker and not much coarser on the last 

 whorl, 18 riblets in 1 mm. ; on earlier whorls it varies less. 

 The first li/o whorls are smooth. 



An immature specimen shows 3 strongly developed radial 

 folds in the base of the last quarter turn. 



38. Lauria millegrana (Lowe). PI. 13, figs. 12 to 15. 

 The shell is cylindric with obtuse, rounded summit, brown. 



dull. Surface finely costulate, the riblets a little narrower 

 than the intervals. The whorls are rather strongly convex. 

 Aperture much obstructed by 7 lamella?, folds and teeth. 

 The angular lamella is strong, somewhat sinuous, united by 

 a callus with the lip-insertion. Parietal lamella about as 

 high as the angular, stout, not emerging. Columellar 



