126 ACHATINELLA VIRIDANS. 



termixed, imperforate. Whorls 5, convex, with a revolving, 

 slightly impressed line below the suture. Aperture subovate, 

 stained with a pink color just within the margin ; lip slightly 

 thickened. Length three-fourths, diam. seven-fifteenths inch" 

 (Mighels). 



Oahu (Mighels). Nuuanu to Palolo, various color- forms as 

 far east as Niu. 



Achatinella viridans MIGHELS, Proc. Boston Soc. Nat. Hist., 

 ii, p. 20, January, 1845. PFR., Monographia Hel. Viv., ii, 

 240; iv, 519; vi, 164; Conc'hyl. Cabinet, Bui., p. 286, pi. 67, 

 f . 16, 17. NEWCOMB, P. Z. S., 1854, p. 310 (animal) . Acha- 

 tinella radiata PFR., P. Z. S., 1845, p. 89 (January, 1846). 

 REEVE, Conch. Icon., pi. 5, f. 35. 



Achatinella subvirens NEWC., P. Z. S., 1853, p. 136, pi. 22, 

 f. 18, 1854. Achatinella rutila NEWC., P. Z. S., 1853, p. 138, 

 pi. 22, f. 21, 1854; p. 310 (animal) ; Ann. Lye. N. H. of N. Y., 

 vi, 326 (animal). Achatinella macrostoma PFR., P. Z. S., 

 1855, p. 2, pi. 30, f. 6; Monogr., iv, 520 (Sandwich Is., Frick 

 in Cuming coll.). 



The type of A. viridans was lost by fire, but the descrip- 

 tion applies well to the form found in Nuuanu, Manoa and 

 Palolo valleys, and which has ^always been considered viridans 

 by Hawaiian collectors. C. B. Adams, who had seen MHghels' 

 specimen in his collection, stated that it was identical with A. 

 radiata Pfr. as figured by Reeve. The traditional identifica- 

 tion of viridans is therefore confirmed, that figure being the 

 same as our pi. 25, fig. 1. The shell is glossy, noticeably, 

 though weakly, corrugated. The first three whorls are whitish, 

 or white when the thin cuticle is lost ; next whorl or two yellow 

 or olivaceous, more or less streaked; last 1% or 2 whorls 

 copiously streaked throughout with dark and light green of 

 several shades. The sutural border is distinctly marked by 

 an impressed line. The aperture is white within, the lip a 

 trifle expanded, thickened, within, and either white or flesh- 

 pink. In a large number of specimens seen, not one is sinis- 

 tral. The size and form vary, but shells 20 mm. long, 11 wide 

 are about normal. A wide shell from Nuuanu measures, 

 length 20.2, diam. 13 mm. 



