226 PROCEEDINGS OF THE MALACOLOGICAL SOCIETY. 
124. Srrepraxis EBuRNEUS, Pfeiffer. Pl. IV, Figs. 4-6. 
Streptaxis eburnea, Pfr.: Proc. Zool. Soe., 1861, p. 23; id., Malak. 
Blatt., vol. vii (1861), p. 240. 
Streptaxis eburneus, Pfr.: Mon. Helic., vol. v (1868), p. 447. 
Hab.—Cochin China. 
The illustrations are from the types in the British Museum. 
125. Srrepraxis Exisa, Gould. 
Streptaxis Elisa, Gld.: Proc. Bost. Soc. Nat. Hist., vol. vi (1856), 
p- 18; id., Otia Conch., 1862, p. 220; Pfr., Mon. Helic., vol. v 
(1868), p. 448. 
Hab.—Mergui Archipelago. 
126. Srrepraxrs Roreserrnt, Mollendorff. 
Streptaxis Roebelint, Mildff. : Proc. Zool. Soc., 1894, p. 147, pl. xvi, 
figs. 3, 4. 
Hab.—Island of Samui, Gulf of Siam. 
127. Srrepraxis Prussensts, De Morgan. 
Streptaxis Plussensis, De Morgan: Bull. Soc. zool. France, vol. x 
(1885), p. 371, pl. v, fig. 1. 
Hab.—Perak: Plus Valley, Mount Tchéhél. 
128. Srrepraxis pacuycuitus, Mollendorff. 
Streptaxis pachychilus, Mildff.: Nachr. Blatt. Deutsch. Malak. Ges., 
1884, p. 171; id., Jahrb. Deutsch. Malak. Ges., 1885, p. 374. 
Hab.—China: Kwang-si. 
Section II. Dzscarremon, Pfeiffer. 
Malak. Blitt., vol. ii (1856), p.173. Pariete aperturali et peristomate 
armatis: 6, discoidee. Mon. Helic., vol. iv (1859), p. 328. 
Shell discoidal or depressed, conoidal, volutions regular ; openly 
umbilicated ; aperture transverse, somewhat basal, outer lip reflected 
or expanded, thickened, and, together with the parietal wall, usually 
armed with teeth. Tryon: Man. Conch., ser. 1, vol. i (1885), p. 58. 
129. Srrepraxts piscus, Pfeiffer. 
Streptaxis discus, Pfir.: Proc. Zool. Soc., 1851, p. 252; id., Mon. 
Helic., vol. iii (1853), p. 289; id., Chemn. Conch. Cab., ser. m1, 
Helix, vol. iii (1854), p. 394, pl. exlv, figs. 15-17; Tryon, Man. 
Conch., ser. 11, vol. 1 (1885), p. 66, pl. xvi, figs. 77-79. 
Discartemon discus, Bourg.: Moll. Afr. équat., 1889, p. 46. 
Hab.—? (Brazil, Bourg.). 
130. Srrepraxis crypropon, Moricand. 
Helix (Streptaxis) eryptodon, Moric. : Journ. de Conch., 1851, p. 370, 
pl. x hie. 2: 
Streptaxis cryptodon, Pfr.: Mon. Helic., vol. ii (1853), p. 289 ; Tryon, 
Man. Conch., ser. 11, vol. i (1885), p. 66, pl. xvi, figs. 87-89. 
Discartemon cryptodon, Bourg.: Moll. Atr. équat., 1889, p. 46. 
Hab.—Brazil: Bahia. . 
