HELIX §. 6. 65 



74. Haldemaniana C. B. Adams. (Coll. 3 1.) I. 32. IV. i.s. V. 54.— 



Gloyne in Joiirn. Conch. XX. p. 27. — //. arboreoides C. B. Ad. 

 — Jainaica. 



75. electrina Hombr. & Jacq. -J- IV. 13. V. 54. — Helicopsi.^i ekc- 



trina Peaxe in Proc. Zool. Soc. 1871. p. 475. — Giiam. 

 7G. Adamsi Pfr. (Coll. 32.) I. 32 {ornatella). III. 33. IV. 13. V. 54. — 

 Microcystis filiceti Beck, Adamsi Pease in Proc. Zool. Soc. 1871. 

 p. 475. — Nanina Adamsi Grai/, (Microcystis) Piitel Cat. p. 84. — 

 Ins. Pitcairn. 



77. H. Marqucsana Pease. ^ 



«T. tenuis, orbiculala, imperforata, paruin nitida; anfr. 5, 

 convexiu-sculis, sub lente radiatim striatis, ultimo basi paulo 

 convexiore, ad peripberiam rotundato; apertura rotundato- 

 Uinaris; columella incrassata, vix reflcxa, alba; perist. acutum, 

 simplex. Supra flavida, fascia una rufescente fusca cingulata, 

 basi subviridis. — Diam. 9, alt. 7 mill. » (P.) 



Ilelix Marqiiesana Ilarper Pease in Amer. journ. Conch. IV. 



1868. p. 153. t. 12. f. 2. 

 Mi.c.roc!jstis Marquesana Pease in Proc. Zool. Soc. 1871. p. 4?)"). 

 ilabitat in insulis Marquesas. 



* 



78. aurulenta (Microcystis) Beck. III. 626. V. 54. — Nanina 

 aurulcnla Graij. (Microcysfis) Pdtcl Cat. p. 84. — Helicopsis auru- 

 lenta Pease in Proc. Zool. Soc. 1871. p. 475. — Ins. Pitcairn. 



79. H. perpolita (Microcystis) Mousson. ■{■ 



«T. imperforata , convexo-depressa, vix slrialula, nilidis- 

 sima, pellucida, succineo-cornea. Spira convexiuscula ; summo 

 obtusato; sutura tenuissime marginata, appressa. Anfr. iVa, 

 mediocriter accrescentes, convoxiuscuii; ullimus paulo major, 

 non descendens, de sutura regulariter rotundatus^ subtus con- 

 vexiusculus, medio impressus. Apertura subverticalis (lO^cum 

 axi), lunato -subcircularis. Perist. rectum, acutum, non labia- 

 tum; marginibus remotis; dextro et basali arcuatis; columellari 

 brevi, non reflexo, callose inserlo. — Alt. 4,8, diam. 7 mill. 

 Rat. anfr. '2:1; rat. apert. 5 : 4.» (M.) 



p. solida: «fortior, paulo globulosior, margine columellari 

 interne calloso, subnoduloso; alt. 5, diam. 8 mill.» 



Microcystis perpolita Mouss. in Journ. Conch. XVII. 1S69. p. 326. 

 t. U. f. 1 ; XVIII. 1870. p. H3; XIX. 

 1871. p. 8. 

 Helicopsis perpolita Pease in Proc. Zool. Soc. 1871. p. 47?), 

 Zonites perpolita Mus. Godeff. cat. V. 1874. p. 00. 



VII. 5 



