OPISTHOSTOMA. DIPLOMMATINA. 
69 
4. 0. macrostoma Beddome. + 
„Testa perforata, conoideo-ovata, albida vel pallide rubella, 
subdistanter oblique filiformi-costulata, sub lente spiraliter mi- 
nutissime et confertissime striata. Spira elevato-conoidea, la- 
teribus convexis, apice acutiusculo; sutura valde impressa. 
Anfr. 5 1 / 2 , convexi, apicales normales non deviantes, penultimus 
vix major, ultimus confertius costulatus, brevissime constrictus, 
antice sigmoideo-deflexus. Umbilicus ab anfractu ultimo non 
occultus. Apertura retrorsa subrotunda, fere verticalis; peri- 
stoma brevissime ad anfractus duos, penultimum et antepenul- 
timum, adnatum, duplex, internum continuum expansiusculum, 
externum expansum, breviter interruptum. — Long. 3, diam. 
maj. 3, min. 2, apert. diam. cum. perist, U/ 2 mill. 44 (Bl.) 
Opisthostoma macrostoma Bedd. mss.; W. T. Blanf. in Journ. As. Soc. 
Beng. XXXVIII. Pt. 2. p. 139. t. 16. f. 7. (Contrib. 
to Ind. Malac. X. 1869.) 
Habitat in montibus Bramagiri dictis, in regione Wynaad, 
haud procul a littore Malabarico Indiae (H. Beddome). 
XIX. Diplommatina Benson. 
Pfr. Mon. Pneum. I. p. 121; II. p. 9; III. p. 8. — 0. 
Semper in Journ. Conch. XIII. 1865. p. 289. — Crosse ibid. 
XIV. 1866. p. 348. — . Martens Ostas. Zool. II. 1867. p. 
164. — W. T. Blanford in Ann. and Mag. nat. hist. 3d. ser. 
XIX. 1867. p. 306 (animal cum icone: oculi ut in Cyclo- 
phoro); Contrib. to Ind. Malac. IX. 1868 (Journ. As. Soc. 
XXXVII. Pt. 2); Ann. and Mag. n. h. 4th. ser. III. 1869. 
p. 343. — Macdonald in Ann. and Mag. n. h. 4th. ser. IV. 
1869. p. 77 : genus Cyclophoridarum. — Godwin Austen in 
Journ. As. Soc. XXXIX. 1870. Pt. 2. p. 7. — Stoliczka ibid. 
XL. 1871. Pt. 2. p. 153. — Patel Catal. 1873. p. 16. 118. 
Injungantur genera (vel subgenera) Palaina 0. Semper , 
Moussonia 0. Semper, Nickla W. T. Blanford et Arinia 11. 
Sp A. Adams. 
Conspectus specierum. 
A. Normales, 
a. dextrorsae §. 1. Nr. 1 — 29. 
b. sinistrorsae 2. — 30 — 49. 
