60 
Var. a. Found at the roots of shrubs and trees at Calauang, isle 
of Luzon, by H. Cuming. 
Var. 6. Found under decayed leaves in the isle of Negros, by H. 
Cuming. 
CycLostoma RUFESCcENS, nob., Thes. Conch. part 3. pl. 24. f. 36, 
37. Cycl. testd suborbiculari, rufescente, spird brevi, anfractibus 
guatuor, rotundatis, spiraliter costellatis et striatis, costellis 
crenulatis; suturd profundd ; aperturd circulari, peritremate tenui ; 
umbilico magno. 
There are two varieties of this species, one of a dark red colour, 
the other almost white. They were communicated by Mr. Powis, 
from Martinique. 
CycLostoMa PLEBEIUM, nob., Thes. Conch. part 3. pl. 24. f. 40. 
Cycl. testd subglobosd, tenui, obscurd, subfuscd, spird breviusculd ; 
anfractibus quatuor, rotundatis, rapide crescentibus, apice obtusi- 
usculo ; suturd distinctd ; apertura magnd, circulari, peritremate , 
tenui; umbilico parvulo ; operculo multispirali, extis albicante, 
maculd centrali, depressd, margine canaliculato, intis nitido. 
Found in the earth under decayed leaves at Calauang, in the pro- 
vince of Laguna, isle of Luzon, by H. Cuming. 
Cyciostoma spurcum, nob., Thes. Conch. part 3. pl. 24. f. 75, 76. 
Cycl. testd suborbiculari, rufescente-fuscd, spird prominuld ; an- 
fractibus quatuor, rotundatis, albicante-subvariegatis, spiraliter 
striatis et subcarinatis, suturd distinctd, subcrenulatd ; aperturd 
circulari, peritremate albo, tenui, subreflexo ; umbilico parvo ; 
operculo crassiusculo, anfractibus quinis. 
From the Seychelle Islands. In Mr. Cuming’s collection. 
Cyctostoma Crncrnnus, nob., Thes. Conch. part 3. pl. 24. f. 77, 
78. Cycl. testd suborbiculari, subturritd, tenui, albidd, interdim 
Fusco-unifasciatd ; anfractibus quinis, rotundatis, postice spiralitér 
sulcatis, sulcis subdistantibus, antice spiralitér striatis ; suturdé 
distinctd ; apertura circulari, peritremate tenui, versus umbilicum 
parvum subreflexo, apice obtusiusculo. 
Locality not known. In Mr. Cuming’s collection. 
CycLostoma NiTIDUM, nob., Thes. Conch. part 3. pl. 29. f. 225, 
226, 227. Cycl. testd globoso-comicd, tenui, pellucida, levi, 
alba, interdiim fusco-variegatd, spird acuminatd, anfractibus quinis, 
rotundatis, ultimo maximo, ventricoso, aperturd circulari, peritre- 
mate reflexo, latere columellari subsinuato ; suturd distinctd ; um- 
bilico parvo ; operculo tenui, corneo, spirali. 
Var. a. Shell pale, closely dotted with brown; on leaves of bushes 
in the isle of Guimaras. 
Var. 6. Shell pale, with brown dots and bands; from the same 
locality as a. 
Var. c, Shell white ; same locality as a, and on leaves of trees at 
Sibonga. 
Var. d. Shell pale ; found at Cabanatuan. 
