12 PLICAXIS. 



10. T. PFEIFFERI (Menke). PI. 4, figs. 21, 22. 



Shell oblong-turrited, rather solid, lightly striate, but little 

 shining, Avaxy-buff. Spire long, the apex obtuse, suture mod- 

 erately impressed. Whorls 8, equally and slightly convex, 

 the last slightly exceeding a fourth the total length, base 

 slightly tapering. Coluniella white-calloused, slightly twisted. 

 Aperture suboblique, elliptical-oval; peristome simple, unex- 

 panded, the right margin dilated forward. Length 19, diam. 

 5.5, length of aperture 5, width 3 mm. (Pfr.) . 



Touranne, Cochin China; Annam (Fruhstorfer). 



Spiraxis pfeifferi MKE., Malak. Bl., iii, 1856, p. 68. PFR., 

 Novit. Conch., i, p. 103, pi. 29, f . 7, 8 ; Monogr. Hel. Viv., iv, 

 573. Prosopeas p., MLLDFF., Nachrbl. D. Malak. Ges., 1900, 

 p. 134. 



11. T. SERVAINI (Mabille). PI. 4, fig. 6. 



Shell oblong-subcylindrie, hyaline, delicate, rather solid, 

 glossy, slightly striatulate under a lens. Spire elongate, the 

 apex obtuse, mamillate. Whorls 8, convex, separated by an 

 impressed, narrowly margined suture, the last whorl cylin- 

 dric, nearly one-third the total length, rather swollen basally, 

 slightly tapering. Aperture subvertical, ovate, angular be- 

 low; columella a little thickened, arcuate, slightly and ob- 

 liquely truncate at the base ; outer margin a little curved 

 forward; parietal callus very thin. Length 20, diam. 6 mm. 

 (Mob.}. 



Tonkin (Balansa). 



Siibulina servaini J. MABILLE, Moll. Tonk. diagn., p. 10 

 (May 14, 1887) ; Bull. Soc. Malac. France, iv, 1887, p. 104, 

 pi. 4, f. 13. 



The original figure, which I have copied, is evidently so 

 poor as to be practically worthless. 



Genus PLICAXIS Sykes, 1903. 



Plicaxis SYKES, Journal of Malacology, x, p. 1, March 31, 

 1903. ? Rltodina DE MORGAN, Le Naturaliste, May, 1885, p. 

 68. Not Khodina Guenee, 1854. 



Shell imperforate, dextral, cylindric, striate, the early 



