54 
PTEROCYCLOS §. 2. 3. 
23. ? Batchianensis Reeve, f III. 43. — Ins. Batchian. 
24 . Ft. tristis Blanford. f 
„Testa 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 le viter 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. 19^2, min. 16, axis 
9^2? apert. diam. intus 6 1 / 2 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 (Beddome). 
Obs. An potius Cyclophorus vel Rhiostoma? 
§• 3. 
25. Blandi Bens, f I. 49. II. 32. III. 43. — - Pulo Penang. 
26. Troscheli Bens, f 1. 44. II. 32. III. 43. — H. Nevill Enum. 1871. 
p. 5. — Ceylon. 
Species mihi incognitae. 
Pterocyclos 
Arakanensis BlanJ. Conf. Blanford Contrib. to Ind. Malac. V. 1865. p. 
34 adnot. 
zebrinus H. Nevill Enum. Helic. et Pneum. Ceyl. 1871. p. 6. 
Mastersi Blanf . ) jj an i ^ Theob. Conch. Ind. t. 5. 
insigms lheob. ) v 
Cambodjensis Morelet Ser. conch. IV. 75. 
XIII. Heterocyclus Crosse. 
„ Testa perforata, scalariformi-turrita, tenuiuscula; anfr. 
pauci, ultimus descendens, solutus, liber; peristoma simplex, 
