112 MADEIRAN SPECIES OP LAURIA. 



specimens of L. monticola pumilio sent by Baron Castello de 

 Paiva (Wollaston). 



Pupa degenerata Wollaston, Testacea Atlantica 1878, p. 

 231. 



An unfigured species which I have not seen. 

 44. Lauria monticola (Lowe). PI. 12, fig. 13, 14. 



Shell cylindric, chestnut-colored, banded with a pale tint; 

 whorls convex, swollen, sculptured with elevated, equidistant, 

 transverse striae. Suture impressed. Aperture 6-toothed;': 

 columella 2-plicate, the posterior fold very obsolete ; two con- 

 tiguous parallel folds in the ventral [parietal] wall, the 

 anterior one smaller, posterior large, continuous with the 

 lip. Lip somewhat reflected, equal, 3-plicate, the inter- 

 mediate fold larger, anterior and posterior minute. Length 

 V/2, diam. scarcely 1 line; 6 whorls {Lowe). 



The free edge of the angular lamella curves towards the 

 outer lip. The columellar is well developed, and there may be 

 a small supracolumellar, but more often none. The lower- 

 palatal fold enters deeply, becoming higher within. Upper- 

 palatal is shorter ; above it there is a small suprapalatal, also 

 shortly entering. The basal fold is strongly developed, more 

 deeply immersed than the other folds. In all there are 8 

 teeth, or 7 when the supracolumellar is lacking. The sinuous 

 riblets are about 0.15 mm. apart — 7 in 1 mm. — on the face 

 of the last whorl, closer on that above. 



Length 2.25, diam. 1.15 mm. ; fully 6 whorls. 



Length 2.5, diam. 1.2 mm. ; 6% whorls. 



Madeira group, Porto Santo; Summit of Pico de Facho, 

 among small stones and vegetable detritus; also on that of 

 Pico Branco, often in company with L. calathiscus (Lowe and 

 Wollaston). 



Helix C. monticola Lowe, Trans. Cambr. Philos. Soc. iv, 

 1833, p. 63, pi. 6, f. 33.— Pupa, monticola Lowe, P. Z. S. 1854, 

 p. 212. — Pfr., Monogr. ii, p. 335. — Wollaston Test. Atl. p. 

 232, with var. pumilio, p. 233. 



