84 MESSRS. GTJLICK AND SMITH ON [Jail. 7, 



vestiti ; spira subturrita, sutura simplex ; apertura alba, antice 

 roseo tincta {interdum alba) ; perist. tenue, intus levissime in- 

 crassatum ; columella arcuata, labro callo tenui juncta, dente 

 compresso subbasali munita. 

 Long. 15 mill., diam. 8|. 

 Station. On the ground in the forest. 



Habitat. The metropolis of the species is Waialei, on Oahu. It is 

 also found in Kahuku and Hanula, and rarely in Kawailoa. 



Affinities. It is allied to Am. rubens, Gould, and Am. decorticata, 

 Gk. ; but it is thinner, smaller, and darker in colour than the 

 former, and has a more convex spire than the latter. 



Remarks. It is always dextral. The specimen figured is from 

 Waialei. 



Amastra decorticata, Gk. (Plate X. fig. 14.) 

 Testa ovato-conica, dextrorsa, incrementi Uneis leviter striata, 

 castanea, labrum versus nigrescens ; anfract. 6-6^, convexiusculi, 

 prim* 3 politi ; sutura simplex, pallida; apertura intus dilute 

 sordido-ccerulea ; perist. tenue intus nigrescens, vix incrassatum ; 

 plica columellaris tenuis. 

 Long. 16 mill., diam. 8|. 

 Station. Under dead leaves in the forest. 



Habitat. The metropolis of the species is Kawailoa, on Oahu. It 



is also found in Helemano, Opaiula, TVaimea, Waialei, and Kahuku. 



Affinities. It is allied to Am. elliptica, Gk., the metropolis of 



which lies to the north-west of this, and to Am. infata, Pfr., which 



is found in the valleys to the east. 



Remarks. It is always dextral. The specimen figured is from 

 Kawailoa. 



Amastra rubida, Gk. (Plate X. fig. 12.) B.M. 



Testa dextrorsa, elongato-ovata, incrementi Uneis striata, dilute 

 rubro-castanea (epidermide nigrescenti raro induta) ; anfract. 6, 

 convexiusculi, primi 2 laves fusci ; sutura simplex ; apertura 

 parva, intus subpurpurea; perist. tenue; plica columellaris tenuis- 

 sima. 



Long. 18 mill., diam. 9. 



Station. On the ground in the forest. 



Habitat. Kahuku, on Oahu. 



Affinities. It is allied to Am. elliptica, Gk., but differs in being 

 more elongate in form, thicker in structure, and for the most part 

 destitute of epidermis. 



Remarks. It is always dextral. 



Amastra rustic a, Gk. (Plate X. fig. 17.) B.M. 



Testa dextrorsa, imperforata, ovato-conica, incrementi Uneis leviter 

 striata, sub epidermide olivacea, dilutissime rubescens ; anfract. G, 

 convexiusculi, primi 2 fortiter, tertiusque levins sulcati ; sutura 

 simplex, parum profunda ; apertura parva, spiram non aquans, 

 subrubescens ; perist. arena/ urn, tenue; columella brevis, plica 

 inconspicua munita, labro cullo pertenui juncta. 



