116 ~—s Mr. R. T. Lowe on new Species of Cyclostoma. 
4, C. Monizianum. 
T. subpyramidato-conoidea sericeo-nitens tenuiuscula omnino ecari- 
nata laxiuscule rimato-perforata fusco-coffeacea ; spira elevatius- 
cula subproducta, anfr. eequicrescentibus subdepressiusculis tu- 
midis, striolis vel subtilissimis ereberrimis equissimis distinctis 
transyersis alias spirales obsoletas valde indistinctas tenuissime reti- 
culatim decussantibus, ultimo subdepresso haud ventricoso ; sutura 
valde impressa profunda; apert. spira distincte breviore. 
Long. 5-53, diam. 43-5 mill. ; apert. 21, spira 3-31 longa ; anfr. 5. 
Hab. in Promontorio ‘‘ Garajao”’ vel “ Brazen Head”’ dicto Ma- 
derze in scaturigine v. rupe madida. 
The volutions are even more tumid, and the suture more 
deeply impressed, than in any form of C. lucidum, from which it 
differs also in its smaller size, elongate pyramidal shape, open 
rimal perforation, and regularly increasing, vertically slightly 
flattened or depressed, reticulately striolate volutions. Colour 
uniform plain dark coffee-brown. Opercle unknown. 
Named in honour of my able and observant botanical friend 
S.J. M. Moniz, who found it last year on the Brazen Head, 
near Funchal, and who, supposing it to be distinct from the 
common C. lucidum, has most liberally furnished me with two 
out of his four or five specimens. On referring to my own col- 
lections, I find, however, four examples of precisely the same 
shell, collected by myself on the same spot in January 1851, 
and kept apart for ulterior examination. Thus a sufficiency of 
specimens exists to warrant some reliance on the constancy of 
the above-recorded characters.. 
I desire to commend, however, all the four preceding species 
to the close study and attention of observers on the spot, who 
alone will be able to decide by examination of the animals, and 
more numerous examples of the shells from the same or different 
localities, whether the above differences are merely sexual and 
varietal, or really good and valid. For myself, I must confess 
to having either overlooked or disregarded them as unim- 
portant until very recently. 
5. C. annulatum. 
T. breviter subpyramidato-conoidea sericeo-nitens tenuiuscula largius- 
cule rimato-umbilicata omnino ecarinata fusco-coffeacea ; spira 
elevatiuscula subproducta, anifr. eequicrescentibus valde tumidis 
depressis, intermediis costis sequidistantibus transversis concin- 
niter annulatis ceterum omnino leevigatis vel aliquando tenuissime 
et obsoletissime spiraliter substriolatis, ultimo depresso haud ven- 
tricoso peristoma versus exannulato costis vel rarioribus vy. evanes- 
centibus v. nullis; sutura valde profunda inciso-impressa; apert. 
spira vix breviore. 
Long. 4-4}, diam. 4—4 mill. ; apert. 2-23, spira 2} longa; anfr. 44. 
Hab. in declivibus rupibusve humidis sylvaruam Insularum Cana- 
