HELIX. 541 
Pitys canalis Garr. in Amer. journ. conch. VII. 1872. p. 227. 
t: 49. £547. 
Patula canalis Schmeltz Mus. Godeffr. cat. V. p. 93. 
Habitat Rarotonga, Cook's Isles. 
1143". H. rudis (Pitys) Garrett. T 
« Testa umbilicata, subdiscoidea, tenuis, subpellucida, sub- 
tilissime laminato-costata: costis rudibus, sinuosis, magis minusve 
irregulariter dispositis vel partim deficientibus, interstitiis sub 
lente subtilissime striatis; cornea, fuscula, interdum brunnescenti- 
nigra, cum vel sine radiis rufis; anfr. 3 superi spirae plani; 
sutura canaliculata; anfr. 4!/;, perconvexi, subrapide accrescentes, 
ultimus basi rotundatus, obliquus (? «slanting ») supra periphe- 
riam; umbilicus profundus, circa !/, diametri occupans; aper- 
tura sinuose circularis; perist. tenue, simplex. — Diam. 3!/, 
alt. 2 mill.» (Garr. angl.) 
Pitys rudis Garr. in Amer. journ. conch. VIL. 1872. p. 227. 
6:492 17 48: 
Paiula rudis Schmeltz Mus. Godeffr. cat. V. p. 93. 
Habitat Rarotonga, Cook's Isles. 
1143*. H. tenuicostata (Pitys) Garrett. 4 
« Testa umbilicata, discoidea, tenuis, pellucida, leviter nitens, 
uniformiter pallide cornea, laminato-costata: costis parvulis, te- 
nuibus, subconfertis, obliquis, leviter sinuosis, in basi continuatis, 
interstitiis sub lente dense striatis; spira plana; sutura profunde 
impressa; anfr. 4, plano-convexi, rapide accrescentes, ultimus 
subtus convexus, superne subplanulatus; umbilicus amplus, per- 
spectivus, anfractus monstrans, circa !/4, diametri occupans; 
apertura obliqua, latior quam alta, ovato-luniformis; perist. 
tenue, simplex. — Diam. 4!5, alt. 2 mill.» (Garr. angl.) 
Pitys lenuicostata Garr. in Amer. journ. conch. VII 1872. 
p. 229. t. 19. f. 23. 
Patula tenuicosiata  Schmeltz Mus. Godeffr. cat. V. p. 94. 
Habitat Rarotonga, Cook's Isles. 
h 
1157*. H. abyssinica Jickeli. T 
« Testa pervie umbilicata, orbiculato-depressiuscula, solidula, 
opaca, fusca, per longitudinem fortiter, conferte et peroblique 
costulato-striata; spira convexiuscula, apice obtuso; anfractus 4, 
convexiusculi, lente et regulariter crescentes, sutura subprofun- 
3t 
