68 THE NAUTILUS. 



Habitat, Kahakuloa, West Maui. 



This shell is the Maui counterpart of Part, theodorei, Bald., a 

 much larger shell found on the Island of Molokai. 

 Named in honor of Miss Winnie of Walluku, Maui. 



Partulina mutabilis, n. sp. 



Shell dextral or sinistral, minutely perforated, somewhat solid, 

 acuminately conical, apex subacute ; surface shining, marked with 

 delicate incremental striae, under a lens exhibiting very close decus- 

 sating, spiral striae ; apical whorls smooth. Color varying from 

 pure white to dark fulvous, often variously striped with brown lines 

 and bands, some on the base and others spiral. Whorls 6, convex, 

 margined above, suture well impressed. Aperture oblique, oval, 

 white within, columella margin reflexed. Peristome acute, thick- 

 ened within. Columella terminating in a well-developed, flexuous 

 white fold. 



Length 16 ; diam. 10 mm. 



Habitat, Waichu Valley, West Maui. 



This shell seems to be the Maui counterpart of Partulina varia- 

 bilis, Nc. a larger shell which is found on the neighboring island of 

 Lanai. 



Laminella duoplicata, n. sp. 



Shell sinistral, sometimes slightly perforated, thin, elongately con- 

 ical, apex obtuse ; surface shining, marked with fine growth striae, 

 nuclear whorls smooth. Color light yellow, marked with somewhat 

 regular black lineations, apex black, whorls six , convex ; suture 

 well impressed. Aperture a little oblique, oval, white within. 

 Peristome simple, very thin. Columella white, biplicate, the 

 terminal plication a thin, oblique lamellar plait, the inner one less 

 prominent. 



Length 12 ; diam. 6 mm. 



Habitat, Waichu Valley, West Maui. 



This and the following species are important additions to the 

 Laminellae of Maui. The only previously described Maui species of 

 this section are Lam. picta, Migh., Lam. alexandri, Nc. and Lam. 

 erecta Pse. 



Laminella aspera, n. sp. 



Shell sinistral, minutely perforated, thin, conical, apex obtuse, 



