8 TORTAXIS. 



dirty, scabrous. Whorls 8, planulate, the suture impressed; 

 apex obtuse (Bens.). 



Middle and southern China: Chusan, in company with 

 Clausilia aculus; Macao (Dr. Cantor); Siam. 



Achatina erecta BENSON, Ann. and Mag. N. H., ix, August, 

 1842, p. 487. REEVE, Conch. Icon., pi. 16, f. 69. PPR., 

 Monogr., ii, p. 265; iii, 500; iv, 573; vi, 190; Conchyl. Cab., 

 p. 333, pi. 28, f. 6, 7 ; P. Z. S., 1855, p. 9.Stenogyra erecta 

 MARTENS, P. Z. S., 1860, p. 9?;0stas. Zool., p. 52, 83 (Siam). 

 NEVILL, Hand List Moll. Ind. Mus., i, p. 164 (Shanghai, 

 Tonnerre). MLLDFF., Jahrb. D. M. Ges., viii, 1881, p. 302, 

 304 (Canton). MORELET, Journ. de Conchyl., 1889, p. 128 

 (Ajuthia, Siam). GREDLER, Mai. Bl. (n. F.), ix, 1887, p. 

 142. Spiraxis erectus Bens., FISCHER & DAUTZ., Mission 

 Pavie Indo-Chine, iii, p. 411. 



Benson's very incomplete description is given above. The 

 shell is imperforate, cylindric-turrited, with a very obtuse 

 apex; rather solid though thin, straw-colored or greenish- 

 yellow, but slightly translucent, very glossy, sculptured with 

 arcuate and rather weak growth-wrinkles. "Whorls 7!/2> mod- 

 erately convex. Apex rounded, smooth. Aperture oblique, 

 ovate, the outer lip acute, arched forward just below the 

 upper insertion. Columella strongly concave above, white- 

 calloused below, and obliquely truncated at the base, the 

 truncation vertical. Length 20.7, diam. 6 mm., length of 

 aperture 6 mm. 



It is wider and less elongated than T. mandarinus or T. 

 lubricus and is more cylindric and more delicate than T. 

 minis. Specimens from Kuang-tung sent by Mr. B. 

 Schmacker are larger than the form considered typical of 

 erecta by Reeve and Pfeiffer, with 8y 2 strongly convex 

 whorls. One is figured in pi. 2, figs. 24, 25. The lip is ob- 

 tuse, though not thickened outside. Specimens measure: 

 length 24.5, diam. 6.8, aperture 6.7 mm. ; length 24, diam. 

 6.7, length of aperture 6.9 mm. 



6. T. MIRUS (Gredler). PI. 2, fig. 18. 



Shell imperforate, turriculate, rather solid, irregularly 



