LAURIA, CANARY ISLANDS. 119 



preciably Larger, broader, and more strictly ovate (or less 

 oval), as well as more coarsely striated; its whorls are more 

 convex (and the suture consequently deeper) and its aper- 

 ture is more widely developed and more auriform — the mar- 

 gins of its peristome (which is thicker, and of a more livid 

 or carneous tinge, or less white) being much wider apart, 

 and the right hand one more outwardly rounded below the 

 insertion, as well as a fined with a more distinct tubercle 

 within. Its upper ventral plait, also, is more lamelliform 

 and less sinuated. and not only a little further removed 

 from the angle of the lip, but usually quite unconnected 

 with the latter by a carneous sphincter. 



'" Mi-. Lowe's examples of this very distinct Pupa were 

 taken, during April of 1861, above Garachico, in the north 

 of Teneriffe, — namely adhering to wet rocks and sodden, 

 leaves, in the drip of a small waterfall, on the road from, 

 that place to Ycod de los Binhos (in company with the 

 Ilyalina ( 'lyniene, Physa acuta, Ancylus striatus, and 

 Hydroeoena gutta, the moisture loving habits of which it 

 would appear to share ". (Wollaston) . 



49. Lauria pythiella (Mouss.). PL 15, figs. 3. 4. 



Shell minute, rimate-perforate, ovate, arcuately striatulate, 

 glossy; chestnut-brown, the base whitish. Spire tapering, 

 ovoid, the summit minute, a little paler; suture linear, not 

 impressed. Whorls 6^, the first somewhat convex, follow- 

 ing flat, striatulate at the suture ; last whorl not tapering, 

 more convex below the change of color, compressed around 

 the umbilicus. Aperture vertical, one-third the length, com- 

 pressed semioval, 4-plicate : 2 parietal lamella? (one long, 

 strong, protracted, often joined to the right lip by a callus, 

 the other thin, deeply placed) ; one palatal, obsolete, entering; 

 one columellar, strong, inflexed. Peristome thickened, pale, 

 expanded, the right margin flexuous in front, subimpressed 

 laterally, subtuberculate within; columellar margin some- 

 what sinuous, a little protracted at the insertion. Alt. 3. 

 diam. 1.7 mm. (Mousson). 



Canary Islands: Teneriffe, in the forest district above 

 Tagenana; Agua Garcia; wood at La Esperanza near 

 Laguna. Palma at El Monte above Barloventa, taken by 

 Lowe; on the ascent of the Cumbre above Buenavista, [typo 



