262 HELIX S. 77. 
1699. H. distans Peasoe. | 
. « T. tenuis, planorboidea, depressa, pallide castanea, oblique 
costato-striata, supra planulata; spira parum elevata; anfr. 4—5, 
convexi, ultimus magnus, rotundus, basi subangulatus, sutura 
impressa; apertura magna, vix obliqua, subcircularis, ad parie- 
tale costellis intro volventibus instructa; umbilicus !/ diametri 
subaequans. — Diam. 7, alt. 215 mill.» (P.) 
Helix distans Harper Pease in Tryon Amer. journ. Conch. Il. 
p. 290. 
Habitat in insulis Sandwich. 
Obs: «Pertinet ad sectionem H. hystricis, sed inter omnes cjus 
species a typo maxime distans.» 
1700. H. consimilis Pease. T 
«T. depressa, sublenticularis, tenuiscula, utrinque con- 
fertim radiatim costellata, supra fusco et luteo tessellata, infra 
rufo-castanea interdum rufo-fusco strigata, late umbilicata; 
anfr. 5, convexis, suturis impressis, interdum subangulatis; 
anfr. ultimus medio interdum subdepressus, ad umbilicum et 
peripheriam rotundatus; apertura rotundato-lunaris, lamella 
unica volvente instrueta; labro simplici, acuto. — Diam. 4, alt. 
2 mill.» (P.) 
Helio consimilis Harper Pease in Amer. journ. Conch. III. 1867 
p. 227. 
Pilys consimilis Pease in Proc. Zool. Soc. 1871. p. 4 
Patula consimilis Schmeltz in Mus. God. cat. V. p. 207. 
Habitat in insulis Tahiti, Raiatea. 
Obs. Similis H. radiellae Pfr. 
1701. H. rotellina (Pithys) Peasc. T 
« T. planorboidea, tenuiuscula, anguste umbilicata, tenuis- 
sime radiatim elevato-striata; spira vix elevata; anfr. 5, con- 
vexi, ultimus rotundatus; apertura lunata, obliqua, prope trans- 
versalis, subcompressa; paries aperturalis lamella unica intrante 
munita; perist. simplex, rectum; flavido et rufo alternatim ra- 
diatim strigata. — Diam. 2, alt. 1 mill.» (P.) 
Pühys rotellina Harper Pease in Crosse Journ. Conch. XVIII. 
1820. p.393. 
Pitys rotellina Pease in Proc. Zool. Soc, 1871. p. 453. 
Habitat in insula Aitutake. 
Obs. Species perforatione umbilicali angusta et anfractu ullimo ro- 
tundato ab affinibus distinguenda. 
