150 ACHATINELLA DECIPIENS. 



band and white line at the suture. Fig. 12a, chocolate. The 

 lip is dark-edged, or in form fig. 12c has two spots at the ter- 

 minations of the bands. The surface is rather rough. This 

 colony is mainly sinistral, but there are some dextral shells. 



la. A. DECIPIENS KALIUWAAENSIS Pilsbry & Cooke, n. subsp. 

 PI, 32, figs. 1, la, 16. 



The shell is similar to decipiens but smoother, more glossy, 

 with only obsolete traces of sculpture. Color various: (a) 

 White with a brownish sutural line, (&) Olive-ocher with a 

 white zone below the suture and a white line at periphery. 

 (c) Olive-ocher with a chestnut subsutural line or none, and a 

 pia'le peripheral line. Lip only narrowly thickened within, 

 white. 



Length 19.2, diam. 10, aperture 9 mm. 



Length 17, diam. 9.7, aperture 8 mm. 



Length 15.3, diam. 8.9, aperture 7.6 mm. 



Eastern ravines of Kaliuwaa, type loe., also central and 

 western ravines (Irwin Spalding). 



This new form has such a relation to decipiens as pulcher- 

 rirna to byronii. The locality lies some distance northwest of 

 that of decipiens, in a district where the other Bulimellas dif- 

 fer from the Kahana forms. The coloration is much like that 

 of typical decipiens. The white-banded form may be consid- 

 ered the typical pattern. The cotypes are in coll. A. N. S. P. 

 and Bishop Museum, collected by Mr. Spalding who has a 

 long series. It is also in the Thaanum, Thurston 'and some 

 other recently gathered collections. 



75. A. DECIPIENS ( ?) SWAINSONI Pfeiffer. PI. 30, fig. 13. 



" Shell sinistral, imperforate, ovate-conic, solid, nearly 

 smooth, glossy ; whitish, delicately streaked with tawny. Spire 

 conic, apex fulvous, rather acute ; suture margined. Whorls 

 5!/2, a little convex, the last nearly equal to two-fifths the 

 length, swollen below the suture, rounded >at base. Aperture 

 slightly diagonal, reversed auriform. Oolumellar fold super- 

 ior, strong, nodiform; peristome bordered with black-brown, 

 the external margin a little reflected, thickly labiate within j 



