ADDENDA. 



345. Achatinella irregularis Pfeiffer. 



Amiii/rci irii-gitlai i.\ Pfr. P. Zool. Soc. London, 1S55, p. 205. 



A. testa imperf. , dextr. , tenuiuscula, londitudinaliter confertim plicata, 

 nigricante, interdum albido-fasciata; spira irregulari, conica, obtusa; sutura 

 subcrenata; anfr. 5 1-2 celeriter accresceiitibus, convexis, penultimo gibbo, 

 ultimo 3-7 longitiidinis subitquaiite, infra medium la^viore, interdum corneo; 

 apertura vix obliqua, ovali-oblonga; plica colum. supera, paruui prominente; 

 perist. simplice, margine dextro antrorsum subarcuato, columellari dilatato, 

 adnato. Long. 9, diam. 4 1-3 mill. 



Shell imperforate, dextral, quite thin, lougitudinally closely 

 plicate, blackish, sometimes banded with white ; spire irregular, 

 conic, obtuse; sutttre subcrenulate; whorls 5 1-2 rapidly increas- 

 ing, convex, the penultimate gibbous, the last nearly equal to 

 3-7 of the length, smoother below the periphery, sometimes corne- 

 ous; aperture hardly obliqtie, oval-oblong; columella fold high, 

 hardly prominent; lip simple, dextral margin slightly arcuate be- 

 low, columellar margin dilated, adnate. 



Hab. ? 



346. • Achatinella alba Nuttall. 



A. alba Nuttall. Jay, Cat. Shells, Ed. iii, 1839, p. 58 (nomen. .solum). 



This shell equals A. lorata Fer. (white variety). 

 Hab. Oahu. 



347. Achatinella vestita Mighels. 



A. veilila Migh. Proc. Best. Soc, ii, 1845, p. 20. 



vSliell sinistral, acuminate-conical, light brown, or white, with 

 beautiful, narrow, dark brown bands, more or less numerous, im- 

 perforate; whorls 6, convex; aperture semilunate; lip refle<5led. 



Average length i in., diam. 1-2 in. 



Hab, Waianae, Oahu. — Migh. 



348. Achatinella seminigra Lamarck. 



Monodovta irmiiui^in I, am. Hist. N:it. .Xtiim. I'.iris, 1S43, vol. i.\, p. iSi. 



M. testa oblique conica, imperforata, heviuscula, iiifenie nigra, sujierne 

 alba; dente columellari albo; labro simplici. 



( '8.5 ) 



