AMASTRA, OAHU. 229 



spire (fig. 14) but having the sculpture and color of cylin- 

 drica. 



Another lot in the Robert Swift collection (57690 A. N. 

 S. P.) contains two shells banded with red-brown on a nearly 

 white ground, two without the bands but otherwise similar. 

 All have a thin light brown cuticle. One of these is drawn 

 in fig. 14 of plate 34. It measures, length 21, diam. 9.8 mm. ; 

 whorls 7. 



A. rubens has a thicker, blacker outer cuticle, a more ob- 

 tuse apex, and less strong striation than cylindnca, but it 

 must be admitted that there are specimens which seem to be 

 intermediate between rubens and the bandies form of cylin- 

 drica. On the other hand, cylindrica approaches close to A. 

 intermedia; yet the typical forms of these three species are 

 abundantly distinct. 



53. A. VARIEGATA (Pfeiffer). PI. 34, figs. 1 to 5. 



"Shell subperf orate, rather solid, oblong-turrite ; striate; 

 brownish-buff variegated with streaks of brown epidermis. 

 Spire turrited, the apex ruddy, rather acute ; suture deep, not 

 margined. Whorls 7, convex, the last two-fifths the total 

 length. Golumella indistinctly two-folded, the lower fold 

 transverse, compressed, lamelliform, white. Aperture a little 

 oblique, semioval. Peristome simple, unexpanded, acute, the 

 columellar margin reflexed, overhanging, giving the appear- 

 ance of a perforation. Length 17, diam. 8, oblique alt, of 

 aperture 7, width 3% mm." (Pfr.). 



Sandwich Is. (Pfr.) ; Oahu : Mokuleia, north of the west- 

 ern end of the Waianae range (Gulick) ; Waianae valley 

 (Baldwin) ; head of Boothes valley (Hartman). 



Achatinella variegata PFR., Zeitschr. f. Malak., 1849, p. 90; 

 Conchyl. Cab., p. 282, pi. 67, f. 14, 15; Monogr., iii, 466.- 

 BALDWIN, Catalogue, p. 10. Achatinella rubens REEVE (in 

 part), Conch. Icon., pi. 6, f. 42a. Achatinella decepta C. B. 

 ADAMS, Ann. Lye. N. H. of N. Y., v, p. 43 ; Contrib. to Conch., 

 no. 8, p. 127. Amastra variegata HARTMAN, Proc. A. N. S. 

 Phila,, 1888, p. 51. 



It is a species of more turrited shape than cylindnca or 

 riibens, the last whorl being shorter. 



