1058 
MALAYSIAX LAND AND FRESHWATER MOLLUSCA, 
S. GRACILIS, Lea, Proc. A.mer. Phil. Soc. 1841, II. p. 31 ; Pfr. 
Mon. Hel. II. p. 518. 
Java (?). 
S. MiNUTA, Mouss. Zolling. in Peterm. Geog. Mittheil. 1864, 
H. VIII. p. 303 (Nomen) ; Mart. Ostas. Zool. II. p. 388; Pfr. 
JNlon. Hel. V. p. 464. 
Bali. 
Family CYCLOPHORID^. 
The Cyclophoritlse have heliciform shells with a circular 
opening, and covered with a thick periostraca ; operculum cal- 
careous or horny, spiral with numerous whorls. 
Animal with long, slender, pointed tentacles, foot broadly 
expanded, not grooved. 
21. C'y CLOTHS, Guilding. 
Conchological Papers, by L. Guilding. See Swainson, “Shells 
and Shell-fish,” pp. 182 and 336. 
Shell nearly discoid ; pillar none ; spire scarcely raised ; lip 
thickened; widely umbilicate; operculum shelly; whorls numerous 
with raised margins. 44 species, mostly tropical. 
Cyclotus hungerfordianus, 0. von Moll. Jour. As. Soc. 
Beng. LY. 1886, p. 306. 
Bukit Pondok, Perak. 
C. (1) DiscoiDEUS, Sowerby = Cyclostoma discoideum, Sow. Thes. 
N. 60, p. Ill, pi. 25, figs. 87-88; Chemn. 2nd edit. Cycl. No. 153, 
p. 144, pi. 20, figs. 1-3 ; Mouss. Jav. IMoll. p. 50, pi. 20, fig. 10 = 
Aperostoma discoideum, Pfi’. in Zeitschr. f. Malak. 1847, p. 104 = 
Cyclotus discoideus, Gray, Catal. Cycloph. p. 8, No. 11 ; Pfr. Consp. 
No. 36 ; INIon. Pneumon. Viv. p. 36, 
Malang, Java, 
C. OPALINUS, Mouss. = Cyclostoma opalinum, Mouss. Jav. Moll, 
p. 51, pi. 5, fig. 12= Cyclotus opalinus, Pfr. Consp. No. 37 ; 
Mon. Pneumon. p. 36. 
Malang, Java. 
