Mr. R. T. Lowe on new Species of Cyclostoma. 117 
riensium Ferri (Hierro) ad locum “El Golfo” dictum, necnon 
ae in conyallibus “ Barranco de Agua”’ et “ Barr® de Galga”’ 
ictis. ) 
Three examples of this very distinct little species were found 
first by Mr. Wollaston, when we explored together, in February 
1858, for three or four days, the vast and magnificent sylvan 
amphitheatre of El Golfo, on the north-west coast of Hierro ; 
and we each discovered a few more subsequently in two locali- 
ties in Palma, where it appears, like several Helices, to have 
escaped the extensive, though by no means “ exhaustive,” re- 
searches of Herr Blauner. 
Opercle (in a single Hierro example) pale yellowish horn- 
colour, thin, with membranous colourless edges, and obscurely 
spiral. 
6. C. Lyonnetianum, Lowe. 
T. conoideo-pyramidata trochoidea sericeo-nitens solidiuscula angu- 
lato-carinata anguste rimato-perforata fusco-coffeacea ; spira ele- 
vato-producta pyramidata, anfr. eequicrescentibus convexo-planatis 
eequaliter et concinniter exilissime et creberrime spiraliter, ine- 
qualiter et rudiuscule v. subgrossiuscule transverse striatis ; sutura 
. distincta impressa; apert. spira distincte breviore.—Syn. Diagn. 
15. n° 70; Catal. Moll. Mad. 217; Pf. Mon. Pneum. 52. n°89. 
Long. 4-5, diam. 3-3} mill. ; apert. 1}-2, spira 27-3 longa; anfr. 
5-54. 
Hab. in rupibus declivibusque irriguis convallium (Rib. de S* 
Luzia et Rib. do Inferno) Maderez recens, necnon fossilis ad 
Canical. ‘ 
Opercle thin, obscurely spiral, pale yellowish or horn-colour, 
with whitish membranous edges. 
7. C. trochoideum. 
T. abbreviato-conoidea exacte trochiformis nitida tenuiuscula acute 
angulato-carinata imperforato-rimata, rima’fere v. omuino clausa ; 
spira conico-acuta, anfr. ineequicrescentibus planatis, striolis spi- 
ralibus creberrimis exilissimis eequalibus alias transversas tenues 
exoletas crebras subineequales subtilissime decussantibus, ultimo 
subito majore antice sursum subdilatato abrupte ascendente, subtus 
fere planato ; sutura distincta parum impressa antice subito ascen- 
dente ; apert. spira vix breviore. 
Long. 44-4, diam. 4-3$ mill.; apert. 2, spira 21-21 longa; anfr. 51, 
Hab. in convalle “ Rib. do Inferno” dicta orze Septentr. Maderze. 
Described from three living examples (wanting the opercle), 
kindly lent me for the purpose by T. V. Wollaston, Esy., who 
received them from S'. Moniz and Mr. T. S. Leacock. They 
were discovered in the locality above recorded in 1859 bya 
German naturalist; whose name, unfortunately, Mr. Wollaston 
does not precisely recollect, but which otherwise would have 
