ALCADIA. 249 



presso et angulatiin producto, basali sinu .seniicirculari a co- 

 luniella separato. — Operc. tenue, rubellunK — Diani inaj. 

 8 '/3, niin. 63/4, alt. 5 niill. (Coll. Nr. 206.) 



HeHcina (joHusti)mn (liindl. in Poey Memor II. p. 8". 



Alcndia ijuiiuatoinn Pfr in.Malak. Bl. V. 1858. p. 194. 



Habitat in insula Cuba : San Juan de Letran prope Trini- 

 dad (^Gundlach). 



15. .4. iiicriistHta ftiiiadEs^vZg. i^(^5. 



T. conoideo-depressa, tenuiuscula, seriatini pilosa , rufula, 

 tejjjumeuto nigricante obducta; spira breviter conoidea ; anfr. o 

 niodice convexi, ultimus peripheria rotundatus, basi callo nitido, 

 hito, subcircuuiscripto munitus ; apertura fere diagonalis, semi- 

 ovalis ; columelhi subcompressa, antrorsum in denticukun ter- 

 minata; perist. vix expansiun, margine basali levissimc arcuato, 

 cum denticulo columellari sinum parvulum formante. — ( )perc. 

 tenue, margaritaceum. — Diam. maj 10, min. 8' 4, min. (i' -3 

 milh (CgII. Nr. 207.) 



Helicina inrrustata Guiidl. in litt. 



Akadia incrustala Pfr. in Malak. Bl. VI. 1859. p. 80. 



Habitat in insuha Cuba : Yateras in districto Guantana- 

 mensi (Gundhich), 



16. A. Eiimiiiiiilla ^^«.'Inlaiid* 1566. 



T. conica, solidula, striatula, vix nitidula, albido et rufo 

 varie marmorata et fasciata; spira convexo-conica, raucronulo 

 pallido terminata; anfr. 5 convexiusculi , uhimus antice de- 

 flexus, basi subplanulatus ; columella brevis, filaris, basi denti- 

 culo, terminata, callum emittens tenuem ; apertura obliqua, sub- 

 trianguhiri-semiovalis ; perist. tenue, margine dextro superne 

 simplice, tum dilatato et expanso, basali sinu distincto a denti- 

 culo columellae separato. — Operc? — Diam niaj. 7*2, ■ 

 min. 6^3, ah. 61 ^ mill. {Colf Nr. 208.) 



Alcadia mammiUa Weint. m Malak Bl IX. 1862. p 197. 201. 



Habitat in insula Haiti. 



Obs. Persimilis Hclicinae Hcevcanae Pfi' , uec non (peristomatis 

 ibrmatione) H. helliiliie Giindl. , tamen ob incisuram tlistinctam generi 

 Alcadiae ab Auctore jure ailscripta. 



