34 PROSOPEAS. 



the suture. Spire slender, regularly tapering to the obtuse 

 apex. Whorls 11%, slowly increasing, the first convex, the 

 rest plano-convex; suture well impressed, suboblique; last 

 whorl oblong, slightly wider than the preceding, rounded an- 

 teriorly to the middle, tapering below. Aperture subvertical, 

 oblong, angular above, 'anteriorly produced arcuately near the 

 insertion, the base receding, somewhat narrowed. Columella 

 hardly truncate but arcuate, and at the base subplicate within. 

 Peristome simple, giving off a small lamina over the very 

 minute perforation. Length 27.5, diam. 5.75, aperture 6 mm. 

 (Anc.). 



Laos: Luang-prabang (Henri Counillon). 



Stenogyra henrici ANC., Annales du Musee d'Histoire Na- 

 turelle de Marseille (ser. ii), i, p. 134, pi. 9, f. E (Sept., 1894). 



This handsome Stenogyra of the group Prosopeas seems to 

 me to have affinities with S. pagoda Semper, of Luzon, and 

 not with other forms now known from Indo-China ( Ancey) . 



32. P. TERES (H. Adams). PI. 4, fig. 13. 



Shell turrited, rather thin, obliquely minutely striate, pale 

 fulvous. Spire lengthened, the apex obtuse, suture somewhat 

 channelled. Whorls 9, a little convex, the last tapering bas- 

 ally, slightly more than one-third the length. Columella 

 arcuate, not reaching the base of the aperture, subtruncate. 

 Aperture suboval, peristome simple, unexpanded, the right 

 margin sinuous. Length 25, diam. 6 mm. ; aperture 7x3.5 

 mm. (H. Ad.) . 



Hainan (Mr. Swinhoe). 



Rumina (Subulina) teres H. AD., P. Z. S., 1870, p. 8, pi. 

 1, f. 14. Ackatina t., PFR., Monogr., viii, p. 288. 



33. P. DECORTICATUM (Beeve) . PI. 6, fig. 74. 



" Shell subulate, rather solid, scarcely umbilicate, whorls 

 eight in number, concentrically rather rudely plicately stri- 

 ated, columella thin, reflected, aperture rather small, oblong- 

 ovate, lip thin; dull greenish horn" (Reeve). 



Length 10.3 mm. 



Macao, China (Dr. Cantor, in Benson coll.). 



