96 MADEIRAN SPECIES OF LAUEIA. 



A unique example of this fine new Pupa, with the remains 

 of its animal still present in the aperture, was detected by 

 T. Vernon Wollaston, Esq., the well-known explorer of the 

 Atlantic insect fauna and author of ' Insecta Maderensia ' 

 Canariensia, etc., in a box containing a number of specimens 

 of P. concinna Lowe, sent to him from Madeira, about a year 

 ago by the Baron do Castello de Paiva, and marked ' Rib. do 

 Inferno ' ". 



29a. L. loweana transiens (WolL). PI. 11, figs. 1, 2. 



A little smaller, somewhat more strongly and not so closely 

 striate ; shell generally somewhat paler and a little less solid ; 

 sometimes subpellucid, conspicuously paler, or banded 

 (Wollaston). There is a small upper-palatal fold. 



Length 3.6, diam. 1.85 mm. ; 6V2 whorls. 



Length 3.2, diam. 1.8 mm.; 6V2 whorls. 



The special locality of this form was not noted. Taken 

 only by Paiva 7 s collector. It differs very little from L. 

 cassidula. 



30. Lauria cassidula (Lowe). PL 11, fig. 3. 



The shell is perforate and rimate, ovate, stout, chamois to 

 cream-buff. Surface scarcely shining, closely, strongly 

 striate, the striae irregular and partly obsolete on the last 

 whorl, which is slightly glossy. Outlines of spire are strongly 

 convex. The aperture is truncate-oval, 7-plicate. The high, 

 thin, angular lamella emerges beyond the lip-insertion, with 

 which it connects by an elevated lamina. Parietal lamella well 

 developed. Columellar lamella slanting downward as usual, 

 a small but deeply entering supracolumellar above it. Lower- 

 palatal fold high and strong, entering to the dorsal side; 

 above it a short, but well developed upper-palatal fold. 

 There is also a very deeply immersed but well developed sub- 

 columellar fold. The lip is expanded, slightly reflected, bear- 

 ing a stout tooth above, defining the short, squarish sinulus. 

 Length 3.2, diam. 1.8 mm. ; 6^/2 whorls. 



Madeira: Ribeira de Sta, Luzia at a rather high elevation, 

 at the foot of lofty, perpendicular rocks, amongst vegetable 

 debris (Wollaston, Armitage, Watson) ; very rare. 



