HELIX. 569 
obliqua, securiformis, plicis 6 intrantibus, quarum 2 in pariete 
aperturali, 3 in margine basali, 4 in margine supero; perist. 
simplex, acutum. — Diam. maj. 5'5, min. 5, alt. 3 mill.» (S.) 
Endodonta irregularis Semp. Philippin. Landmoll, III. 1 874. p. 141. 
Habitat Peleliu insularum Palau. 
16627. H. lacerata (Endodonta) Semper. 4| 
«T. aperte umbilicata, discoidea, superne regulariter tuber- 
culato-lirata, carinata, alba; spira depressa vel elevata, obtusa; 
anfr. 5—5!/, lente accrescentes, ultimus carinatus, carina lace- 
rata, subtus rotundatus, lineis 129—416 tuberculiferis distinctius 
concentrice striatus; umbilieus latissimus; apertura subsecuri- 
formis, obliqua, lamella parietali una in margine basali et callo- 
sitate ad marginem columellarem; perist. subincrassatum. — 
Diam. maj. 410—141, min. 9, alt. 515—5 mill.» (S.) 
Endodonta lacerata Semp. Philippin. Landmoll. HI. 1874. p. 141. 
Habitat Peleliu et Nermalck prope Coróre insularum Palau. 
Obs. Descriptio lamellarum minus clara! An huc collocanda? 
g. 75. 
1668. contorta Fér. — Helir intercarinata Migh. («Proc. Zool. Soc. 
1845. p. 21») Pease in Journ. Conch. 1871. p. 96. (Citatio erronea !) 
1671*. H. multilamellata (Pitys) Garrett. | 
«Testa umbilicata, subdiseoidea, tenuis, subpellucida, con- 
fertim et subtilissime costata: costis lamelliformibus, subtus con- 
ferüoribus ac subtilioribus; laete vel saturate cornea, superne 
rufo-tessellata, subtus unicolor; spira plano-convexa, apice plano; 
sutura profunde impressa; anfr. 6!/5, convexi, superne turgidi, 
regulariter lenteque accrescentes, ultimus introrsum declivis ; 
umbilicus profundus, anfractus monstrans, circa !/ diametri oc- 
cupans; apertura verlüicalis, anguste luniformis; fauces lamellis 
9 fere aequidistantübus armatae, columella tenuis 2- et pars 
parietalis 4-lamellata; perist. tenue, simplex. — Diam. 3!/, 
alt. 11/5 mill.» (Garr. angl.) 
Pitys multilamellata  Garr. in Amer. journ. conch. VIL. 1872. 
p. 230. t. 19. f. 25. 
Patula. multilamellata Schmeltz Mus. Godeffr. cat. V. p. 94. 
Habitat Rarotonga, Cook's Isles. 
1619?. H. Derbesiana Crosse. T 
«T. late et pervie umbilicata, parva, discoidea, tenuiuscula, 
striis conferüs, sub lente tantum bene conspicuis longitudinaliter 
