IIELIX §. 75. 259 



Endodonta Graffei Mouss. in Journ. Conch. XVIL 1869. p. 332. 



t. U. f. 3. 

 Pitys Graffii Pease in Proc. Zool. Soc. \81i. p. 474. 

 Hal)itat in insula Upolu (Graffe). 



* 



1678. sexlamellata Pfp. (CoII. 641.) I. 186. III. 144. IV. 155. V.221. 



— Endodonta Palel Cat. p. 95. — Pitys sexlamcUata Pease in 

 Proc. Zool. Soc. 1871. p. 474: Mangareva. — Ins. Gamhier. 



1679. Oparica Ant. (CoII. 642.) I. 186. 111. 144. IV. 155. V. 221. — 



Pitys oparica Pease in Proc. Zool. Soc. 1871. p. 474: Rapa, — 

 Opara. 



1680. H. ensifera (Gastrodonta) Mousson. *f* 



«T. miniita, puncto-perforata, depresso-subglobosa, pellu- 

 cicla, nitidissima, obscure conica. Spira plane conoidea; summo 

 planiusculo; sutura paulo impressa, angustissime submarginata. 

 Anfr. 4 '/2 (•'') regulares, supra planiusculi; ultimus major, non 

 descendens, supra subangulatus, ad basin convexus, medio an- 

 guste 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. Golumella plica producta, aream 

 callosam albam includente, praedita. — Alt. 1,5, diam. 2 mill. 

 Rat. anfr. 3:1; rat. aperL 2:1.» (M.) 



Gastrodonta ensifera Mouss. in Journ. Conch. XVII. 1869. 



p. 328. t. 14. f. 2. 

 Helicopsis ensifera Pease in Proc. Zool. Soc. 1871. p. 475. 

 Habitat in insula Samoa (Graffe). 



1681. H. decemplicata (Pithys) Mousson. •{• 



« T. parvula, satis umbilicata, subroluliformis, fortiter striato- 

 coslulata, alba vel grisea, fasciis transversis fuscis, angulatis 

 ornata. Spira depressa, vix convexiuscula, arcte spirata; summo 

 non prominulo, corneo; sutura impressa. Anfr, Sy^ — 6, sensim 

 accrescentes, supra subteretes; ultimus non descendens, medio 

 minus rotundatus, curvatim costulatus, linea peripherica media, 

 subtus convexus. AperL subverticalis (80^ cum axi), late fal- 

 ciformis, lamellis 10 munita, 4 in pariete quarum 3 superis 

 longioribus, 6 in basi et palato dispositis. Perist. rcclum, 

 acutum; marginibus distanlibus, vix convergentibus, lamina 

 tenui junctis, dextro antrorsum leniter sinuato. Umbilicus aper- 

 tus, y^ diametri aequans. — Alt. 0,9; diam. maj. 2 mill. — 

 RaL anfr. 7:2; raU apert. 5:2.» (M.) 



17* 



