146 Original Descriptions of Achatinella . 



embryonic whorls smooth; color reddish, with traces of a decidu- 

 ous, thin, brown epidermis; whorls 7, slightly convex; suture well 

 impressed; aperture elongately oval, a trifle oblique, rather small, 

 purplish red within; peristome simple, thin, margined with dark 

 purple; columella white with a purple tinge, flexuous, abruptly 

 terminating in a thin, slightly curved lamellar plait. Length 19, 

 diam. 9 mm. 



Hab. Konahuauui Mt. 



245. Achatinella textilis Ferussae. 



Helix ( Helicteres) textilis Fer., Voy. Freycinet, Zool., p. 482. 



Testa dextrorsa, ovata, vertice acuminata, striis longitudinalibus et 

 transversalibus cselata; epidermide luteo vel rufo-fugaci; anfractibus 5; ap- 

 ertura sernilunata; peristomate intus incrassato; columella brevi, costa dis- 

 tincta munita; rima umbilicali vix distincta. 



Longeur, six lignes deux tiers; diametre, trois lignes trois quarts. 



Shell dextral, ovate, apex acuminate, engraved with longi- 

 tudinal and transverse striations, epidermis yellow or fugitive 

 red ; whorls 5 ; aperture semilunate ; lip thickened within ; colu- 

 mella short, furnished with a distinct fold; umbilical cleft scarcely 

 distinct. 



246. Achatinella microstoma Gould. 



.-) . microstoma Old. P. Boston Soc, ii, 1S45, p. 28. 



T. ovata imperforata, solida, epidermide fusco-virescente; anfr. 6, ulti- 

 mo ventricoso; apertura parva, ovato-rotundata, fauce livida; labro simplici, 

 intus incrassato ; columella profunde sinuosa, callo crasso obtecta ; plica 

 valida. Long. 3-5, lat. 7-20 inch. 



Shell ovate, imperforate, solid, with a brownish green epider- 

 mis; whorls 6, with the last ventricose ; aperture small, ovate- 

 rotundate, bluish; lip simple, thickened within; columella strongly 

 twisted, covered with a thick callus; fold strong. 



Hab. Nuuanu and Kalihi. 



Mr. Baldwin places this with A. textilis Fer. 



247. Achatinella undata Baldwin. 



A mash a undata Bald. P. Acad. Phil., 1895, p. 230, pi. xi, fig. 39. 



Shell dextral, imperforate, solid, ovate; spire convexly coni- 

 cal, apex rather acute, base somewhat attenuated; surface lustre- 

 less, closely and rather evenly ribbed in the direction of the growth 

 lines, nuclear whorls finely radiately sulcated with prominent rib- 

 striae; color light brown and dark chestnut, alternating in irregular 

 longitudinal undulations; whorls 6, slightly convex; suture mod- 

 erately impressed; aperture a trifle oblique, sublimate, rather 





