HELIX §.8. 71 



Anfr. 4Y2 — 5, regulariter et lente accrescentes, plani; ad cari- 

 nam perspicuam minime excavati; ultimus noii descendens, sub- 

 acute carinatus, utrinque paulo compressus, basi convexius- 

 culus, medio impressus, politus^ radiatim et sinuose indistincte 

 fasciatus, Apert. non obliqua (60*^ cum axi), securiformis. 

 Perist. rectum, subacutum, marginibus non convergentibus; 

 supero antrorsum obliquo, basali leuiter sinuato, ad insertio- 

 nem callose reflexo et adnato. — Diam. maj. 7, min. 6, all. 4 

 — 4,5 mill. » (M.) 



Trocho-Nanina exposita Monss. in Journ. Conch. XXI. 1873. 

 p. 111. t. 7. f. 2. 

 Habitat Sunday Island Archipelagi Kermandec (Graffe). 

 Obs. «Affinis H. insculplae Pfr.» 



* 



122. Mariae (Nanina) Gray. (Coll. 31.) I. 81. 111. 39. IV. 17. V. 58. 



— Helix umbraculum Pfr. olim. — Nova Seelandia. 



123. cultrata Gould. t 1. 37. 111. 40. IV. 17. V. 58. — Nanina cul- 



trata Graij. — Sagda cultrata Acl. — HeUcopsis cultrala Pease 

 in Proc. Zool. Soc.' IS?!. p. 456. — T«heiti, Eimeo. 



124. pertenuis Gould. •{• 1. 38. 111. 40. V. 38. — Nanina pertenuis 



Gray. — Hclicopsis perlenuis Pease in Proc. Zool. Soc. 1871. 

 p. 475. — Ins. Aurora. 



125. Tongana Quoy & Gaim. (Coil. 52.) I. 38. III. 40. IV. 17. V. 58. 



— Nanina Tongana Alb., (Troclionanina) Mouss. in Joiirn. Conch. 

 XIX. 1871. p. 9. — Conf. Schmeltz in Mus. God. cal. V. p. 91. 



— Discus Pcilel Cat. p. 85. — Tonga Tabou, Rarotonga, ins. 

 Philippin. 



126. H. venosa Pease. •{■ . 



«T. orbicularis, glabra, imperforata, tenuis; spira sub- 

 conica, obtusa; anfr. 5, convexiusculi , gradati, ultimus ad pe- 

 ripheriam carinatus, basi convexus; apertura ovato-lunaris. 

 Pallide cinereo-lutescens, lineis tenuibus, nigricantibus radiatim 

 et concentrice ornata. — Diam. 8, alt. 5 mill. » (P.) 



Helix venosa Harper Pease in Tryon Araer. journ. Conch. 11. 



p. 290. t. 21. f. 2. 

 Helicopsis venosa Pease in Proc. Zool. Soc. 1871. p. 47.5. 



Habitat in Polynesia, Rarotonga. 



127. H. frivola Pease. -f- 



«T. parva , subgloboso-conica, tenuis, laevis, glabra, im- 

 perforata; anfr. 4, obsolete carinati, sutura impressa, vix mar- 

 ginata; apertura obliqua, lunato-ovalis. Pallide straminca. — 

 Diam. 51/2, ait. 3V2 mili.)> (P.) 



