140 Annals of the South African Museum. 
256. TRACHYCYSTIS METALLAKTER, sp. noy., pl. 2, f. 6. [S.A.M.] 
Shell small, depressed globose, umbilicate, thin, fulvo-corneous, 
semitransparent. Spire little raised, apex rounded. Whorls 4, 
convex, gradually increasing ; beautifully sculptured above on the 
second, third, and part of the fourth with delicate, curved, rather 
distant, transverse lire, which are clear, but less pronounced, on the 
underside ; towards the aperture the striation becomes closer and 
fainter. Suture deep. Aperture sub-ovate, descending slightly; 
peristome thin, simple. Umbilicus not very wide, but deep, extend- 
ing to the apex. Columella weak, margin slightly reflexed, but in 
no way concealing the umbilicus. 
Diam. maj. 4:0, min. 3°4; alt. 2:2; apert. alt. 1:9, lat. 1:5 mm. 
Type in British Museum. 
Hab. Carr or Goop Horr. Caledon (Connolly). 
As with the far smaller hottentota, M. & P., the distant liree, which 
are such a beautiful feature in immature shells, wear off with in- 
creasing age, and do not seem to be produced after the first 
4 whorls. I have chosen the type carefully, as being in a tran- 
sitional stage, for specimens of exceptional size possessing 5 whorls 
show hardly a trace of the early sculpture, and might well be 
mistaken for a different species. 
257. TRACHYCYSTIS MICROSCOPICA (Krauss). 
1848 Helix microscopica, Krs., Siidafr. Moll. p. 76. pl. 4, f.20. DF. 
as a », Pir., Zeitschr. f. Malak. v. p. 93. D. 
1853 af 33 », . Mon. Hil. i. py 83) oe 
1887 Helix (Pella) microscopica, Krs., Tryon, Man. of Conch. iii. 
p. 106: pL OOM ali, 18. SE 
Type in Stockholm Museum. 
Hab. Natat. Mooi River (Wahlberg). 
Through the courtesy of Dr. 8. Théele, of Stockholm, I am enabled 
to give, on p. 159, a photograph of this little-known species. It 
will be seen that it can hardly be placed in Pupisoma, but its exact 
generic position is extremely doubtful. 
258. TRACHYCYSTIS MICROSTRIATA, Preston. 
1912 Trachycystis microstriata, Prest., Proc. Mal. Soc. x. p.18. DF, 
Type in coll. Dautzenberg. 
Hab. Carr or Goop Horr. Knysna (Cox). 
