— 91 — 



Obs. Priori sine dubio affine, sed facillime disting'uendum, prse- 

 sertim increraenti ratione et sculutura cxiinie asperata. 



62. Cyclostoiua (CistuW Riisei Pf. 



Syn. Cislula Riisei Pf. Mon. Pneum. p. 418. N0 6a in add. 

 Var- ß. nodulosa ; costls subflexuosis, rcmotc et ieviter Pus- 

 tulosis Q)ustulis lineas spirales mcntientibus) ; lineis ru- 

 fis interruptls , sub forma fasciarum transversarum sae- 

 pius occurrentibus, interdurn confluenfibus notata. 

 Hab. Formani typicam e Portorico ab am. Bland et Albers ac- 

 ccpi j varietatem ad rupcs sub fuliis delapsis prope San Juan, 

 legit. b. Blauner, sed parce. 

 Obs. Aufractus ultimus stepissime breviter solutus est ; perlst, 

 duplex, internum vix porrectum, externum breviter expansuin, 

 interdum rubro-punctatuni , et ad margiuera internum (colu- 

 nicüarem) sa^pius inconspicue fimbriato-dentatum. 



Annon huc referendum Cydosloma lineolalum Lam ? 

 (cf. Delessert Rec. t. 20, f. 8). - Cistula ? lineolala Pf. 

 Mon. Pneum. p. 270, N'o 18. (Chemn. cd. 2, t. 6, f. 27- 

 28) , neque cum diagnosi Lamarckiana , neque cum icone 

 Delcssertiana supra laudata ne minima quidem ex parte con- 

 gruit. 



63. Cyclostoiua (Chondropoma) Blaiiiieri Shultl. n. sp. 



Testa subperforata, ovato-conica, truncatula, conferlissime 

 costulato-striata , lincisque spii-alibus obtiisis inconspicue sub- 

 decussata et nodulosa, violaceo-fusca, lineis fiexuosis, vel macu- 

 lis curvatis, seriatis, saturatioribus plarizonata, non nitensj spira 

 regulariter attenuata^ sutura confertim papilioso-crcnulata; anfr. 

 supcrst. 51/2 1 convcxiusculi, ultimus antice vix breviter solutus 5 

 apertura parum obliqua , subovalis ; perist. subduplex , pallidum, 

 obscure fusco-punctatum, internum vix Ieviter porrectum, exter- 

 num anguste pateus , supernc brevlssime anaulato r producfum. 

 Operculum cartiiagineum , pauce spiratum , anfr. rapide accres- 

 centibus , nucleo valde excentrico. 



Alt. 20; Diam. 8; Apert. 6 mill. longa. 

 IJab. Sub foliis delapsis prope Humacac, infrcquens. 

 Obs. Forma, sculptura, et pictura C. decussalo Satis simile, sed 



operculo et peristomatc optima distinctum. 



64. Cyclostoiua (Chcndropoma) Swiftii Sliulll. n. sp. 



Tcs(a perforala, ovato-cor.ica, (nmcalula, obtuse decussala, 

 pallide fusca, inlerrupte violaceo-plurizonata, nitida ; spira regu- 

 laritcr attenuataj sutura minute papilioso-crcnulata; anfr. superst. 

 5, convesi, ultimus subinflatus, antice solutus 3 apertura vix 



