97 
costatis, longitudinaliter creberrimé et minutissimée rugoso-stri- 
atis, columelld verticaliter reflexd, aperturd subquadratd, labro 
tenui, simplici ; colore murino. 
Hab. Andes of Caxamarca, Peru; W. Lobb. 
Very like a Clausilia in form, and of a silken aspect, arising out of 
the very close and minute development of longitudinal striz. 
2. Butimus niGropiLeatus. Bul. testd acuminato-ovatd, sub- 
ampliter umbilicatd, anfractibus septem, convewis, obtuse sub- 
rugoso-striatis, columelld verticaliter reflexd, aperturd ovalt, 
labro simplici ; albidd, basin versus obsolete fusco-fasciatd, apice 
nigro. 
Hab. Chachapoyas, Alto Peru; W. Lobb. 
It is probable, from the faintly-banded appearance of this shell, that 
this is but the pale variety of a darker type. 
3. Butimus roveouatus. Bul. testd oblongo-ovatd, tenuiculd, 
subventricosd, haud umbilicatd, ad apicem obtusd, anfractibus 
quinque ad sex, convewis, longitudinaliter obtuse plicato-striatis, 
punctis oblongis spiraliter lineatim exsculptis, infra suturas pli- 
cato-crenulatis, apicem versus peculiariter foveolatis, suturis 
rudibus, anfractu ultimo oblique descendente, columelld latd, 
depressiusculd, oblique recedente, aperturd oblongo-ovali, labro 
subincrassato, vie refleco ; intense olivaceo-brunned, infra sutu- . 
ras pallidé unifasciatd, suturis albidis, columelld labroque ceru- 
lescente-albis, aperture fauce iridescente-lilaced. 
Hab. Vitoe, near Sarma, Alto Peru; W. Lobb. 
This is the species which Dr. Pfeiffer has assigned to the Bulimus 
Mahogani of Sowerby, Conch. Illustr. f. 59 ; a species of the B. rosa- 
ceus or hemastoma type, of which I can find no description or tidings. 
The species under consideration will be found, on comparison with 
Sowerby’s figure, to be of a more oblong form, more acuminated at 
the apex, and very peculiarly indented round the upper sutures, re- 
minding one very much of the indentations in the shells of Phorus. 
4. Buximus pepstus. Bul. testd subacuminato-ovatd, compresse 
umbilicatd, anfractibus septem, rotundatis, levibus, superne 
depressiusculis, minuté plicato-crenulatis, columelld reflex, 
aperturd parviusculd, labro simplici, intus extusque ustulato- 
Sused, hic illic saturatiore-strigatd. 
Hab. Chachapoyas, Alto Peru; W. Lobb. 
A thin shell, approaching in form and colouring to the Bulimus 
nuz, from which it differs in being of lighter structure, and having a 
more rounded aperture. 
5. Butrmus scirutus. Bul. testd subfusiformi-oblongd, vix um- 
bilicatd, anfractibus octo, leviter convexis, levibus, columelld 
parum reflecd, aperturd subangustd, labro simplici; albidd, 
purpureo-ceruleo tinctd, basin versus ferrugineo-rufd, lineis 
subtilibus albis, irregulariter undulatis, creberrimé longitudi- 
naliter notatd. 
Hab. Chachapoyas, Alto Peru; W. Lobb. 
No. CXCVI.—Proceepineés or THE ZooLoGicaL Society. 
