APPENDIX A. 



ADDITIONS AND CORRECTIONS. 



LEPTACHATINA MAUIENSIS (Pfeiffer). 



Shell subrimate, oblong, rather solid, smoothish, pale cor- 

 neous; spire convexly turrite, the apex obtuse; suture mar- 

 gined. Whorls 6, scarcely convex, the last about two-fifths 

 the length, somewhat compressed basally. Columella ver- 

 tical, somewhat twisted inward, truncate at the base of the 

 subrhombic-oval aperture ; peristome simple, obtuse, the colu- 

 mellar margin a little reflexed, adnate. Length 7, diam. 3 

 mm.; aperture 2y 2 mm. long, l 1 /^ wide (Pfr.). 



Maui (Newcomb). 



Achatina mauiensis PFR., P. Z. S., 1854, p. 126; Mono- 

 graphia, iv. 620. Cionella (Zua) ? mauiensis PFR.-CLESS., 

 Nomencl. Hel. Viv., p. 333, no. 8. 



This species has been overlooked by writers on Hawaiian 

 shells. It seems to be a slender Leptachutina, and Dr. C. M. 

 Cooke, to whom I applied, thinks it close to L. fulgida (p. 

 12), perhaps the same species. 



All published information is given above. 



LEPTACHATINA IRREGULARIS (Pfeiffer). 



Shell imperforate, dextral, rather thin, longitudinally 

 closely plicate; blackish, sometimes banded with whitish. 

 Spire irregular, conic, obtuse ; suture subcrenate ; whorls 5%, 

 rapidly increasing, convex, the penultimate swollen, the last 

 about three-sevenths the total length, smoother below the 

 middle, sometimes corneous. Aperture slightly oblique, oval- 

 oblong; columellar fold above, little projecting; peristome 

 simple, the right margin arching somewhat forward, colu- 



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