AMASTRA, CAIIU. 165 



60. Achatinella microstoma OLD., Proc. Bost. Soc. N. II., ii, 

 1845, p. 28. Achatinella ventulus Fer., PFEIPPER, P. Z. S., 

 1845, p. 89 ; Monogr., ii, p. 241 ; Conchyl. Cab., p. 287, pi. 67, 

 f. 12, 13. --REEVE, Conch. Icon., vi, 1850, pi. 4, f. 31.- 

 THWING, Orig. Descriptions, p. 143, pi. 3, f. 14. Not. of 

 Ferussac. Achatinella ellipsoidea GOULD, Proc. Bost. Soc. N. 

 H., ii, 1847, p. 200; TJ. S. Expl. Exped. Moll., p. 87, pi. 7, fig. 

 96. Leptachatina textilis Fer., W. G. BINNEY, Ann. N. Y. 

 Acad. Sci., iii, p. 99, pi. 6, f. G (teeth). 



Ferussac 's diagnosis of this species is not good. If the 

 truth be told, he had little talent for description, and his 

 taxonomic instinct was generally at fault. Bruguiere's de- 

 scriptions and Lamarck's systematics are on a higher plane. 

 It was Dr. Newcomb who first recognized the real identity of 

 Helix ventulus and H . textilis, having seen the type specimens 

 of both in the Jardin des Plantes. The typical form seems to 

 have been one of the rather unusual specimens marked with 

 spiral lines, such as are found in Nuuanu valley. 



A. textilis is imperforate or sometimes slightly rimate, solid, 

 oblong-conic, polished, with weak sculpture of fine, uneven 

 growth- wrinkles. Color rich chestnut (varying in intensity), 

 paler, and usually yellow below the suture and around the 

 columella; spire purplish-brown. The chestnut color some- 

 times gives place to yellowish, or again there may be an olive 

 or greenish tinge (the color of the form Gould called A. micro- 

 stoma) . Some yellow shells have numerous indistinct olive- 

 brown spiral lines, and these may be very slightly sunken (fig. 

 6, Waialae) ; an example so marked was described by Ferus- 

 sac. Old shells generally show scattered golden flecks, or 

 whitish lines and dots, from disintegration of the cuticle. 

 The spire has convex outlines below, straight near the apex. 

 Whorls 51/2 to 61/2, but little convex. The second embryonic 

 whorl has very fine, close longitudinal stria?, which in some 

 shells are cut by smoothish spiral bands. The last whorl is 

 more or less convex. Aperture small, rather oblique, flesh- 

 tinted inside, the outer lip strengthened by a narrow whitish 

 rib within the acute edge. The columellar lamella is strong 

 and subhorizontal ; there is a sort of gutter at the junction of 



