IIELIX. 547 



Pitys canalis Garr. in Amer. journ. conch. VII. 1872. p. 227. 



t. 19. f. 17. 

 Patula canalis Schmeltz Mus. Godeffr. cat. V. p. 93. 

 Habitat Rarotonga, Cook's Isles. 



lUS^. H. rudis (Pitys) Garrett. f 



«Testa umbilicata, subdiscoidea, tenuis, subpellucida, sub- 

 tilissime laminato-costata: costis rudibus, sinuosis, magis minusve 

 irregularitcr dispositis vel partim deficientibus, interstitiis sub 

 lente subtilissime striatis; cornea, fuscula, interdum brunnescenti- 

 nigra, cum vel sine radiis rufis; anfr. 3 superi spirae piani; 

 sutura canaliculata; anfr. 4^2? perconvexi, subrapide accrescentes, 

 ultilnus basi rotundatus, obliquus (? n slanting y)) supra periphe- 

 riam; umbilicus profundus, circa V4 diametri occupans; aper- 

 tura sinuose circularis; perist. tenue, simplex. — Diam. 3^2, 

 alt. 2 mill. » (Garr. angl.) 



Pitys rudis Garr. in Amer. journ. conch. VU. 1872. p. 227. 

 t. 19. f. 18. 



Patula rudis Schmeltz Mus. Godeffr. cat. V. p. 93.J 

 Habitat Rarotonga, Cook's Isles. 



1143<=. H. tenuicostata (Pitys) Garrett. -J- 



«Testa umbiiicata, discoidea, tenuis, pellucida, leviter nitens, 

 uniformiter pallide cornea, laminato-costata: costis parvulis, te- 

 nuibus, subconfertis, obh'quis, ieviter 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 V3 diametri occupans; 

 apertura obliqua, latior quam alta^ ovato-Iuniformis; perist. 

 tenue, simplex. — Diam. 4^2? alt. 2 mill. » (Garr. angl.) 



Pitys tenuicostata Garr. in Amer. journ. conch. VII. 1872. 

 p. 229. t. 19. f. 23. 



Patula tenuicostata Schmeltz Mus. Godeffr. cat. V. p. 9 4. 

 Habitat Rarotonga, Cook's Isles. 



1157^. H. abyssinica Jickeli. -{■ 



«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- 



35* 



