CISTULA §. 6. 
273 
24. C. Ijai'gillierti Pfr. 448 
T. perforata, oblonga, decollata, tenuiuscula, costis con- 
fertis, argute elevatis longitudinaliter sculpta, interstitiis lineis 
spiralibus sub lente decussata, fulvida, maculis fuscis, seriatis 
obsolete ornata; sutura profunda, denticulata; anfr. superst. 4 
convexi , ultimus antice breviter solutus; apertura verticalis, 
oblique subovalis ; perist. duplex : internum simplex, externum 
breviter expansum, marginibus superne angulatim junctis. — 
Operc. norm ale. — Long. 12 V 2 , diam. 6 mill. Ap. intus 4 
mill, longa. (Coll. Nr. 196.) 
Cyclostoma Largillierti Pfr. in Zeitschr. f. Malak. 1846. p. 46. 
— — Chemn. ed. II N. 125. p. 121. t. 14. f. 26. 27. 
Choanopoma Largillierti Gray Catal. Cycloph. p. 51. N. 14. 
Vistula Largillierti Pfr. Consp. N. 403. 
Habitat Yucatan (Largilliert). 
25. fallax Pfr. 449 
T. rimata, oblongo - turrita , truncata, tenuis, spiraliter 
obtuse lirata, lineis longitudinalibus confertioribus (octava vel 
decima quavis sub lente validioribus) decussata, non scabra, 
vix nitidula, albida, lineis flexuosis, interruptis fulvis picta; 
spira sub con vexo - turrita ; sutura minute fasciculato - crenata ; 
anfr. superst. 4 — 4 l / 2 convexiusculi , ultimus rotundatus, infra 
medium fascia fulva ornatus, antice longe solutus, circa rimam 
umbilicalem vix spiraliter sulcatus ; apertura sub verticalis, 
ovalis ; perist. album, duplex : internum expansiusculum, incum- 
bens, externum breve, undique subaequaliter patens, superne 
angulatum. — Operc.? — Long. 14, diam. 6 l / 2 mill. Ap. 
intus 4 r / 2 mill, longa, 3 2 / 3 lata. (Mus. Cuming.) 
Cyclostoma fallax Pfr. in Proc. Zool. Soc. 9 Dec. 1851. 
— — Chemn. ed. II. N. 369. t. 45. f. 21. 22. 
Cistula? fallax Pfr , Consp. N. 404. p. 68. 
Habitat . . .? 
Obs. Haec species C. lineolatac Lam. valde affinis videtur. 
26. ©•? serftcina Adaiiss. *j- 450 
T. perforata, valde elongata, conica, lineis longitudina- 
libus obtusis subtiliter elevatis confertim sculpta, sericea, alba, 
seriebus 4 macularum fuscarum et quinta basali minus dis- 
tincta picta; spira modice curvilinearis ; sutura profundiuscula ; 
anfr. superst. 4 l / 2 convexi; apertura breviter soluta; perist. 
duplex : internum indistinctum , externum modice expansum, 
18 
