112 
CYCLOTOPSIS. 
Cydotopsis (novum genus Cyclostomidarum) W. T. Blanf. in Ann. and 
Mag. nat. hist. Jun. 1864. 
Cyclostoma sp., Cyclotus sp. Auct. 
Genus characteribus plurimis Choanopomati affine. 
Species: 
655. 1. semistriata Sow. (Coll. 257. — Cyclotus Pfr. 
Mon. et Suppl. — Reeve t. 4. f. 16. — Cyclo- 
topsis Blanf. 1. c. — Ind. orient.) .... Pneura. II. p. 20. 
656. 2. subdiscoidea Sow. [Cyclotus Pfr. Mon. et 
Suppl. — Reeve t. 4. f. 21, — Cyclotus 
aratus Bens., Pfr. Mon. — Ind. oriental. — 
„An eadem species ac praecedens?" Blanf.) . - - - 23. 
Obs. Conf. Cyclotus spurcus Grat. et Cyclotus Trailli Pfr. 
XXVI. Ctenopoma Shuttleworth. 
Pfr. Mon. Pneum. Suppl. p. 102. 
Conspectus speciemm. 
A. 
Umbilico clause 
§. 1. Nr. 1— 6. 
B. 
Subrim atae 
§. 2. - 7- 9. 
C. 
Perforatione sublibera. 
a. Peristomate subsimplice . . . 
§. 3. __ 10—11. 
b, Peristomate duplice ..... 
§. 4. — 12—18. 
c. Peristomate undulate vel crenato 
5. _ 19—25. 
§. h 
657. 1. Ct* torqiiatum Qiatieprez. 
T. clause perforata, ovato-oblonga, truncata, solidula, liris 
spiralibus costisque chorclaeformibus illas transgredientibus, 
confertissimis ^ fasciculatis sculpta, albida ; sutura fortiter fas- 
ciculato-crenata ; anfr. superst. fere 4 modice convex!, ultimus 
antice nodulo anfractum contiguum tangente lirisque basalibus 
nonnullis validioribus munitus; apertura verticalis, ovalis; perist. 
duplex : internum parum prominens , externum superne et 
latere sinistro late expansum , supra umbilicum adnatum. 
