306 ACHATINELLA SW1FTII. 



36. A. SWIFTII Newcomb. PL 58 ; pi. 59, figs. 1 to 4e, 6, 7. 



"Shell ventricose, pointed at the apex, smooth, polished, 

 shining; whorls 6, slightly rounded above, the last strongly 

 inflated, distinctly margined above ; lip purplish rose, thick 

 and slightly subreflected; aperture ovate; columella short, 

 terminating in a tubercle of the color of the lip; three first 

 whorls white, the lower with very fine and numerous mark- 

 ings of black and white, arranged longitudinally to the shell, 

 giving it a grayish aspect; fine obsolete white lines traverse 

 the shell transversely, and a white sutural line is traced on 

 the last two whorls. Length fourteen, width ten-twentieths of 

 an inch. 



"Var. a. With a broad fascia cutting the body whorl. 



"Var. b. Yellowish ground-color with few markings. 



"This species approaches A. turgida, but is distinct in ap- 

 pearance, locality and habits " (Newcomb). 



Oahu: District of Ewa (Newcomb). In its various forms 

 this species probably extends from the western ridge of Wai- 

 awa to the ridges of Kaukinehua. 



Achatinella swiftii NEWC., P. Z. S., 1853, p. 133, pi. 22, f. 9, 

 9a, 1854; Ann. Lye. N. H. of New York, vi, p. 325. PFR., 

 Monogr., iv, 528. THWING, Orig. Descript. Achatinella, pi. 1, 

 f. 7. Apex albospira SMITH, Proceedings of the Zoological 

 Society of London, 1873, p. 77, pi. 10, f. 8. Apex innotabilis 

 SMITH, P. Z. S., 1873, p. 78, pi. 9, f. 23 (not f. 19). Apex 

 neglectus SMITH, P. Z. S., 1873, p. 78, pi. 9, f. 22. Apex ver- 

 sicolor GULICK, P. Z. S., 1873, p. 80, pi. 9, f. 18. Apex fiavi- 

 dus GULICK, P. Z. S., 1873, p. 80, pi. 10, f. 1, la. Apex coni- 

 formis GULICK, P. Z. S., 1873, p. 80, pi. 9, f. 17 (not f. 23). 

 Apex tuberans GULICK, P. Z. S., 1873, p. 81, pi. 10, f. 3 

 Apex polymorpha GULICK, P. Z. S., 1873, p. 81, pi. 10, f. 5. 



A. swiftii is indifferently dextral or sinistral, though one 

 or the other direction of coil usually predominates in any one 

 colony, sometimes to the exclusion of the other. The em- 

 bryonic whorls are ivory or ocher-tinted, paler towards the 

 tip which is usually a little dusky, though sometimes flesh- 

 tinted or quite white. The coloring of the adult stage is in 



