LYROPUPA. 241 



Length 2.25, diam. 1.3, aperture 0.8 mm. ; 5^4 whorls. 



Length 2.15, diam. 1.4, aperture 0.9 mm. 



The form from the western ravine of upper Kamalo (figs. 

 3, 5) is similar but slightly larger. 



Length 2.45, diam. 1.5, apert. 0.95 mm. ; 5% whorls. 



Length 2.4, diam. 1.4 mm. ; 5% whorls. 



These forms were collected by the authors in some abund- 

 ance among dead leaves in humid, shady places, with L. h. 

 sparna. They differ from L. thcuinumi by the smaller size and 

 fewer ribs. 



A still smaller race of L. rhabdota was found in Mapulehu 

 Valley (Cooke) . Except for their smaller size the shells agree 

 perfectly with the larger and more widely distributed typical 

 form. Length 2.1, diam. 1.28, apert. 0.75 mm. ; 5 whorls. 



'3b. L. rfwbdota lanaiensis Cooke, n. subsp. PL 20, fig. 6. 



Specimens from Lanai differ slightly from the Molokai form. 

 The shells are slightly smaller, more conical in outline, taper- 

 ing more gradually towards a somewhat acute summit; they 

 are darker colored and with the pale zone only indicated near 

 the aperture. There are 16 to 18 ribs on the last whorl ; the 

 embryonic whorls, under a strong lens, are distinctly, spirally 

 striate; the columellar fold enters obliquely, is short, almost 

 nodule-like when viewed from above, and there is usually a 

 minute basal fold, situated deep within. Length 2.5, diam. 

 1.5, apert. 0.92 mm. ; 5% whorls. 



Lanai: (Thaanum, Spalding, Forbes). Type 11041, Bishop 

 Museum ; Paratypes 34182, Bishop Museum, and 119451 A. N. 

 S. P. 



3r. L. rhabdota baldwiniana Cooke, n. subsp. PL 20, figs. 7, 8. 

 Specimens from West Maui agree very closely with the type 

 form in shape, color, etc., but are slightly smaller. They differ 

 mainly in that the embryonic whorls are much more finely 

 stria,te spirally, and in the presence of a minute basal fold and 

 the more axially seated columellar fold. There are usually 

 about two more ribs on the last whorl, which is furnished 

 with from 15 to 17. Length 2.5, diam. 1.5, apert. 1.0 mm.; 

 514 whorls. 



