94 JUADEIRAN SPECIES OF LAURIA. 



defining the sinus; sinus (between the angle and ventral 

 fold) surrounded with a thick corneous sphincter. Length 

 1% — 2 lines {Wollaston). 



Generally similar to L. irrigua, but darker, more striate, 

 often of shorter figure. The supra columellas lamella is* 

 ,^,/igcr, penetrating as far as can be seen in the aperture. 

 There is sometimes a small basal fold but usually none. 

 A small, immersed subcolumellar fold is present. An upper- 

 palatal fold is wanting, or sometimes represented by a mere 

 trace, and the lip-tooth limiting the sinulus is generally slen- 

 der. As in irrigua, there is a strong callous ridge connecting 

 angular lamella and lip-insertion. 



Length 4.35, diam. 2.05 mm. ; 7 whorls. 



Length 3.7, diam. 2 mm. ; 6^ whorls. 



Length 3.2, diam. 1.9 mm. ; 6V2 whorls. 



Madeira : especially northward, believed to be chiefly from 

 the Boa Ventura and the Ribeira do Inferno (Paiva 's 

 collector) . 



Pupa wollastoni Lowk, Ann. Mag. N. H. (3), xix, Feb., 

 1867, p. 81. Not of Paiva, 1866.— Pupa deformis Wollas- 

 ton, Test. Atlant., 1878, p. 216. — Pupa conciima Lowe, Paiva 

 in coll., and Mon. Moll. Mader. 1867, p. 127, in part. Not of 

 Lowe. — Pupa loiveana Wollaston, Test, Atlant., 1878, p. 

 217, with var. transit ns. 



It stands close to the south Madeiran L. irrigua, as noted 

 above. Wollaston found it mixed with lots of L. vineta re- 

 ceived from the Baron de Paiva, and concluded that it lives 

 in the drip of 31 archantia '-padded rocks at a low elevation. 



Pupa wollastoni Lowe, renamed P. deformis Woll., was 

 based upon a single specimen picked out of a lot of loweana 

 and vineta. It is evidently an abnormal shell, in which the 

 spire has been somewhat " telescoped ", leaving a projecting 

 flange below the suture, an unusual but well-known teratologic 

 condition. Wollaston evidently had doubts of its validity. 

 As two specific names have been applied to this specimen, 

 Lowe's account is here given. 



Pupa wollastoni — The shell is rather large, somewhat solid, 



