68 OPISTHOSTOMA. 
XVIII, ? Opisthostoma W. & H. Blanford. 
Pfr. Mon. Pneum. III, p. 55. — OO. Semper in Journ. 
Coneh. XIII. p. 294 et D/anjord ibid. XV. 1864. p. 98 cum 
dubio Diplommatinaceis adnumerant. Conf. 7. Adams in Proc. 
sw. Soc. 1866. p. 445. — Dlanford 1n Proc. Zool. Soc. 1866. 
p. 441; Ann. and Mag. nat. hist. 3d. ser. XIX. 1867. p. 
80b. — Stoliczka in Journ. As. Soc. XL. 1871. p. 157: genus 
Diplommatininarum. — "tel Catal. 1873. p. 1T. 119: genus 
Cycloteorum. —  lectostoma .H. Adams in Ann. and Mag. n. 
hi. 3d.sger, X V./d865: Nr2384. polt (yr vMon; Helie. V. 
p. 436.) —  Seoliostoma sp. Crespigny Nat. hist. review 1864. 
p. 599. 
Species: 
1l. Nilgirica Blanford. t III. 55. —  Opisthostoma nilgiricum. W. T. 
Dlanford in Proc. Zool. Soc. 1866. t. 38. f. 13. — Pykara montium 
Nilgiri. 
3. OQ. Fairbanki Blanford. 1 
.lTesta irregulariter ovata, albida, confertim  costulata, 
lineis impressis spiralibus minutis, vix sub lente conspicuis, 
saepe obsoletis, inter costulas signata. Spira breviter subcy- 
lindriea, apice perobtuso, sutura profunda. Anfr. 5, rotundati, 
duo apicales parum exserti, ex axi deviantes, tertius multo 
major, quartus maximus, quintus brevissime constrictus, ad 
stricturam angulo acuto versus umbilicum deflexus, in figuram 
literae S curvatus, umbilieum omnino tegens, denique sinistror- 
sum ascendens, anfractus penultimus undique junctus. Apertura 
postica, verticalis, subtrigonali-rotundata; peristoma simplex, 
undique expansum. — Operculum normale. — Diam. incl. 
perist. l, b, perist. non incl 1; alt. 1, 5; ADREENEUE diam. 
circa. 0,5 mill. (B.) 
Opisthostoma Fairbanki W. T. Blanf. in Proc. Zool. Soc. 1866. p. 448. 
t. 38. f. 14; Journ. As. Soc. Beng. XXXVIII. Pt. 
3. p.140. (t; 16. (f£. 6. 
Habitat prope Khandalla inter Bombay et Poona Indiae 
orientalis (S. Fairbank). 
* 
3. Crespignyi (Plectostoma) H. Adams. (Coll. 1.) Plectostoma De 
Crespignii .-H. Adams in Ann. and Mag. n. h. 3d. ser. XV. p. 
177. (Pfr. Mon. Helic. V. 437.) — ssel Moll. Born. p. 76. t. 
6. f. 13—15. —  Opisthostoma Decrepignyi Pütel Cat. p. 119. — 
Labuan, Dorneo. 
