296 Zoological Society. 



Cyclostoma rufescens, nob., Thes. Conch, part 3. pi. 24. f. 36, 

 37. Cycl. testd suborbiculari, rufescente, spird brevi, anfractibus 

 quatuor, rotundatis, spiraliter costellatis et striatis, costellis 

 crenulatis, suturd profundd ; aperturd circulari, peritremate tenui ; 

 umbilico magna. 



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. pi. 24. f. 40. 

 Cycl. testd subglobosd, tenui, obscurd, sub/used, spird breviusculd ; 

 anfractibus quatuor^ rotundatis, rapide crescentibus, apice obtusi- 

 usculo ; suturd distinctd ; aperturd magnd, circulari, peritremate 

 tenui ; umbilico parvulo ; operculo multispirali, extils albicante, 

 maculd centrali, depressd, margine canaliculate, intils nitido. 



Found in the earth under decayed leaves at Calauang, in the pro- 

 vince of Laguna, isle of Luzon, by H. Cuming. 



Cyclostoma spurcum, nob., Thes. Conch, part 3. pi. 24. f. 75, 76. 

 Cycl. testd suborbiculari, rufescente-fuscd, spird prominuld ; an- 

 fractibus quatuor, rotmidatis, albicante-subvariegatis , spiraliter 

 striatis et subcarinatis, suturd distinctd, subcrenulatd ; aperturd 

 circulari, peritremate albo, tenui, subrejlexo ; umbilico parvo ; 

 operculo crassiusculo, anfractibus quinis. 



From the Seychelle Islands. In Mr. Cuming's collection. 



Cyclostoma Cincinnus, nob., Thes. Conch, part 3. pi. 24. f. 77, 

 78. Cycl. testd suborbiculari, subturritd, tenui, albidd, inter diim 

 fusco-unifasciatd ; anfractibus quinis, rotundatis, postice spiraliter 

 sulcatis, sulcis subdistantibus, antice spiraliter striatis; suturd 

 distinctd ; aperturd circulari, peritremate tenui, versus umbilicum 

 parvum subrefiexo, apice obtusiusculo . 



Locality not known. In Mr. Cuming's collection. 



Cyclostoma nitidum, nob., Thes. Conch, part 3. pi. 29. f. 225, 

 226, 227. Cycl. testd globoso-conicd, tenui, pellucidd, Icevi, 

 alba, interdilmfusco-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. b. 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. 



Var. e. Shell pale, with brown streaks and dots ; from the island 

 of Guimaras. 



Cyclostoma concinnum, nob., Thes. Conch, part 3. pi. 29. f. 223, 

 224. Cycl. testd globoso-conicd, tenui, pellucidd, Icevi, albidd, 

 viridi-fusco spiraliter lineatd, spird acuminatd, anfrdctibus quinis, 

 rotundatis, ultimo maximo, ventricoso ; aperturd circulari, peri- 



