54 '. PTEROCYCLOS $. 2. 8. 
23. ?Batchianensis Reeve. f III. 43. — Ins. Batchian. 
34, Pt. tristis Blanford. 
»lesta late umbilicata, depressa, tenuis, epidermide crassa, 
fulvescenti-brunnea induta; sub epidermide albida, striatula. 
Spira convexa; apice parum exserto, perobtuso, sutura pro- 
funda. Anfr. 5 rotundati; ultimus teres, longe sensim descen- 
dens. Apertura obliqua, rotunda; peristoma brevissime adna- 
tum, duplex: internum parum porrectum, superne juxta suturam 
vix sinuatum; externum leviter expansum, continuum, a peri- 
stomate interno sulco discretum, supra ejus sinum in alam 
verticalem parvam, instar tubuli imperfecti, antice spectantem 
anfractum  penultimum non attingentem, breviter cucullatim 
productum. — Operc.? — Diam. maj. 19!/;,, min. 16, axis 
9!/, apert. diam. intus 6!/, mill.* (Bl.) 
Pterocyclos? tristis W. T. Blanf. in Journ. As. Soc. Beng. XXXVIII. 
Pt. 2. p. 134. t. 16. f. 9. (Contrib. to Ind. Malac. 
X. 1869.) 
Habitat in provincia ,South-Canara* Indiae (Deddome). 
Obs. An potius Cyclophorus vel Rhiostoma? 
8. 3. 
25. Blandi Bens. t I. 49. II. 32. III. 43. — Pulo Penang. 
26. Troscheli Bens. t I. 44. II. 32. III. 483. — 4. Nevil] Enum. 1871. 
p. 5. — Ceylon. 
Species mihi incognitae. 
Pterocyclos 
Arakanensis DBlanf. Conf. DBlanford Contrib. to Ind. Malac. V. 1865. p. 
34 adnot. 
zebrinus H. Nevill Enum. Helic. et Pneum. Ceyl. 1871. p. 6. 
Mastensstuionf i MT EE Cote hai ED) 
insignis. Theob. 
Cambodjensis Morelet Sér. conch. IV. 75. 
XII. Heteroeyelus Crosse, 
.lesta perforata, scalariformi-turrita, tenuiuscula; anfr. 
pauci, ultimus descendens, solutus, liber; peristoma simplex, 
