HELIX S. 75. 259 
Endodonta Grüffei Mouss. in Journ. Conch. XVII. 1869. p. 332. 
t 44, £73. 
Pitys Grüffü Pease in Proc. Zool. Soc. 1871. p. 474. 
Habitat in insula Upolu (Grülfe). 
1678. sexlamellata Pfr. (Coll. 641.) T. 186. III. 444. IV. 455. V. 221. 
— Endodonta Pütel Cat. p. 95. —  Pitys sexlamellata Pease in 
Proc. Zool. Soc. 4871. p. 474^: Mangareva. — Ins. Gambier. 
1679. Oparica Ant. (Coll. 642.) I. 186. III. 444. IV. 155. V. 221. — 
Pitys oparica Pease in Proc. Zool. Soc. 1874. p. 474: Rapa. — 
Opara. 
1680. H. ensifera (Gastrodonta) Mousson. 
«T. minuta, puncto-perforata, depresso-subglobosa, pellu- 
cida, nitidissima, obscure conica. Spira plane conoidea; summo 
planiusculo; sutura paulo impressa, angustissime submarginata. 
Anfr. 4!/; (?)) regulares, supra planiusculi; ultimus major, non 
descendens, supra subangulatus, ad basin eonvexus, medio an- 
euste impressus. Apertura subverticalis (6? cum axi), suban- 
gusta, angustato-lunaris; palato lamellis duabus acutis, majori 
submediana, minori basali, utrinque evanescentibus ornato. 
Perist. rectum, acutum; marginibus remotis, dextro supra sub- 
recto, infra et basali curvatis. Columella plica producta, aream 
callosam albam includente, praedita. — Alt. 4,5, diam. 2 mill. 
Rat. anfr. 3:4; rat. apert. 2:1.» (M. 
Gastrodonia ensifera Mouss. in Journ. Conch. XVII 1869. 
piss CN EU 
Helicopsis ensifera Pease in Proc. Zool. Soc. 1871. p. 475. 
Habitat in insula Samoa (Grüffe). 
1681. H. decemplicata (Pithys) Mousson. 4 
« T. parvula, satis umbilicata, subrotuliformis, fortiter striato- 
costulata, alba vel grisea, fasciis transversis fuscis, angulatis 
ornata. Spira depressa, vix convexiuscula, arcte spirata; summo 
non prominulo, corneo; sutura impressa. Anfr. 5!5—6, sensim 
accrescentes, supra subteretes; ultimus non descendens, medio 
minus rotundatus, curvatim costulatus, linea peripherica media, 
subtus convexus.  Apert. subverticalis (809 cum axi), late fal- 
ciformis, lamellis 10 munita, 4 in pariete quarum 3 superis 
longioribus, 6 in basi et palato dispositis. — Perist. rectum, 
acutum; marginibus distantibus, vix convergentibus, lamin& 
tenui junctis, dextro antrorsum leniter sinuato. Umbilicus aper- 
tus, !/, diametri aequans. — Alt. 0,9; diam. maj. 2 mill. — 
hat. anfr. 7:2; rat. apert. 5:2.» (M.) 
A7* 
