AURICULELLA, MAUI. 109 



27. A. CRASSULA Smith. PL 18, figs. 1 to 5. 



"Shell sinistral (sometimes dextral), ovate-conic, solid, dis- 

 tinctly perforate, hardly glossy, pale brown, whorls 6^, 

 nearly flat ; aperture a dirty whitish within ; lip thickened, 

 very lightly dilated at the base, prominently furnished with a 

 small tubercle at the juncture of the last whorl ; columella 

 thickened, somewhat reflexed, scarcely plicate, joined to the 

 lip by a thin callus; parietal lamina thin. Length iy 2 , diam. 

 4 mm." (Smith). 



East Maui: Makawao (Smith, Baldwin) ; Olinda (Perkins) ; 

 Haleakala at 4,000 feet (Perkins) ; Kailu (Cooke) ; Keanae 

 (Cooke). "West Maui: lao Valley (Perkins). 



Auriculella crassula SM., P. Z. S. Lond., 1873, p. 88, pi. 10, 

 fig. 22. PFEIFFER, Mon. Hel. Viv., viii, p. 210. ANCEY, Bull. 

 Soc. Malac. France, vi, 1889, p. 224. SYKES, Fauna Hawaiien- 

 sis, ii, Moll., p. 376. Not of BORCHERDING, Zoologica, p. 143, 

 pi. 9, figs. 20, 20a, 22, 22a. Auriculella ponderosa ANCEY, 

 Bull. Soc. Malac. France, vi, 1889, p. 225. Auriculella sol- 

 idissima Smith in BLAND and BINNEY, Ann. Lye. N. H. of N. 

 Y., x, 1874, p. 331, nude name (Makawao). 



This species runs through a number of color varieties, the 

 most common of which is an olive yellow; others have the 

 spire dark, and the suture broadly white-bordered. The white 

 belted pattern, though it occurs in nearly all the species of 

 this genus, and is fairly common in A. uniplicata, does not 

 seem to be found in this species ; at least no specimen of this 

 color variety was found among over 1,500 specimens seen, 

 but there is sometimes a brown belt at the periphery. The 

 spire is nearly always darker than the last whorl, and there 

 is usually a broad white band just below the suture. Borcher- 

 ding's specimens from Molokai are probably a broad form of 

 A. brunnea, and not the real crassula. The prominent tubercle 

 at the posterior end of the thin or thick parietal callus is 

 characteristic. 



28. A. EXPANSA Pease. PL 19, figs. 3, 4, 5, 6. 



"Shell solid, umbilicate, slightly pyramidally ovate, sinis- 

 tral (rarely dextral), longitudinally thinly striate; flatly com- 



