HELIX &. 6. 65 
14. Haldemaniana C. B. Adams. (Coll. 31.) I. 32. IV. 13. V. 54, — 
Gloyne in Journ. Conch. XX. p. 27. — II. arboreoides C. B. Ad. 
— Jamaica. 
15. electrina Hombr. & Jacq. -- IV. 13. V. 54. — Helicopsis elec 
irina Pease in Proc. Zool. Soc. 1871. p. 475. — Guam. 
16. Adamsi Pfr. (Coll. 32.) I. 32 (ornatella). Ill. 33. IV. 43. V. 54. — 
Microcystis filiceti Beck, Adamsi Pease in Proc. Zool. Soc. 1871. 
p. 475. — Nanina Adamsi Gray, (Mierocystis) Pütel Cat. p. 84. — 
Ins. Pitcairn. 
i1. H. Marquesana Peasc. | 
«T. tenuis, orbiculata, imperforata, parum nitida; anfr. 5, 
convexiusculis, sub lente radiatim striatis, ultimo basi paulo 
convexiore, ad peripheriam rotundato; «apertura rotundato- 
lunaris; columella incrassata, vix reflexa, alba; perist. acutur, 
simplex. Supra flavida, fascia una rufescente fusca cingulata, 
basi subviridis. — Diam. 9, alt. 7 mill.» (P.) 
Heli Marquesana Harper Pease in Amer. journ. Conch. IV. 
1868-- pz 4593. 4- 42..1»2. 
Microcystis Marquesana Pease in Proc. Zool. Soc. 1874. p. 455. 
Mabitat in insulis Marquesas. 
* 
18. aurulenta (Microcystis) Beck. !I|l 626. V. 54. —  Naunina 
aurulenta. Gray, (Microcystis) Pátel Cat. p. 84. — Helicopsis auru-— 
lenta Pease in Proc. Zool. Soc. 48714. p. 475. — Ins. Pitcairn. 
19. H. perpolita (Microcystis) IMowusson. | 
«T. imperforata, convexo-depressa, vix striatula, nitidis- 
sima, pellucida, succineo-cornea. Spira convexiuscula; summo 
obtusato; sutura tenuissime marginata, appressa.  Anfr. 4t, 
mediocriter accrescentes, convexiusculi; ultimus paulo major, 
non descendens, de sutura regulariter rotundatus, subtus con- 
vexiusculus, medio impressus. Apertura subverticalis (409 cum 
axi), lunato -subceircularis. Perist. rectum, acutum, non labia- 
tum; marginibus remotis; dextro et basali arcuatis; columellari 
brevi, non reflexo, callose inserto. — Alt. 4,8, diam. 7 mill. 
Rat. anfr. 2:41; rat. apert. 5: &.» (M.) 
8. solida: «fortior, paulo globulosior, margine columellari 
interne calloso, subnoduloso; alt. 5, diam. 8 mill.» 
Microcystis perpolita Mouss. in Journ. Conch. XVII. 1869. p. 326. 
t. 44. f. 4; XVIII. 1870. p. 1413; XIX. 
1873, «p... 8. 
Helicopsis perpolita Pease in Proc. Zool. Soc. 1874. p. 475, 
Zoniles perpolita Mus, Godeff. cat. V. 1874. p. 90. 
VII. z 
D 
