c ap c. 
289. Helix chiliensis Mühlf. — Ant. Verz. p. 36.— 
T. umbilicata, globoso-depressa, tenuis, pellucida, fusco-cornea, 
sub lente rugosa et minutissime granulata; anfr. 4 convexi; 
umbilicus mediocris, pervius; apertura suborbicularis; perist. 
simplex, acutum, marginibus approximatis. 
Diam. 4'/,, alt. 2!/, mill. — Chile. (Cuming.) 
290. Helix sincera Adams mss. — T. umbilicata, 
depressa, tenuis, confertim costulata, cereo-albida; spira plana; 
anfr. 4 convexiusculi, ultimus teres; umbilicus latus, perspecti- 
vus; apertura subverlicalis, lunato- orbicularis; perist. simpli- 
cissimum , rectum. 
Diam. 3'/,, alt. 1?/, mill. — Jamaica. (Adams in coll. 
Cuming.) i 
291. Helix peraffinis Adams mss. — T. umbilicata, 
depressa, striatula, hyalina; spira brevissima, obtusa; anfr. 6 
convexi, ultimus rotundalus, basi planiusculus; umbilicus medio- 
cris; apertura subverticalis, triangulato-lunaris; perist. simplex, 
aculum, margine dextro subverticali, columellari brevissime 
reflexo, basali strictiusculo. 
Diam. 8, min. 4!'/, mill — Jamaica. (Adams in coll. 
Cuming.) 
Medium tenet inter H. Boothianam et vorlticem, cubenses. 
292. Helix dierama Pfr. — T. umbilicata, depressa, 
lenuis, pellucida, hyalina, lineis arcuatis incrementi et. spiralibus 
conferlis subtilissime decussata; spira convexa; sulura impressa; 
anfr. 4!/, planiusculi, rapide accrescentles, ultimus basi angula- 
Qus; umbilicus latus, subinfundibuliformis; apertura perobliqua, 
ovali-subrotundata; perist. simplex, acutum, marginibus subcon- 
liguis, dextro antrorsum arcuato - dilatato. 
Diam. 12, alt. 5 mill. — Hab.? (Coll. com. de Secken- 
dorff.) 
293. Helix Sudensis Pfr. — T. umbilicata, depressa, 
regulariter et confertim costulata, tenuis, diaphana, rubello- 
cornea; spira vix elevata; anír. 6 convexi, ultimus non des- 
cendens; umbilicus majusculus, perspeclivus; apertura rotundato- 
lunaris; perist. simplex, acutum, margine columellari vix dilatato, 
breviter patente. 
Diam. 13, alt. 7 mill. — $Suda ins. Candiae. (Forbes.) 
294. Helix hystrix Mighels (mss.?) — H. seligera 
Gould in sched. — T. umbilicata, depressa, subdiscoidea, regu- 
lariler costulata, corneo-lutea, pilis rectis, rigidis, deciduis hir- 
sula, superne rufo-tessellata; spira plana, medio subimmersa ; 
anfr. 5 convexi, ullimus descendens, basi lineis elevatis, iuler- 
Ax 
o 
