148 Original Descriptions of Achatinella. 



next to the last large, inflated and with the last paler; spire above 

 the next to the last whorl suddenly extended into a cone; suture 

 simple; aperture small, not equal to the spire, subquadrate, reddish 

 within; lip thin; columella erect, lightly reflexed, almost covering 

 a small cleft, furnished with a subbasal thin fold, and joined to the 

 lip by a very thin callus. 



Hab. ? 



251. Achatinella nigrolabris Smith. 



Amastra nigrolabrii Sra. P. Zool. Soc. London, 1S73, p. 85, pi. x, fig. 9. 



T. dextrorsa, globoso-conica, perforata, parum nitida, longitudinaliter 

 rugose (baud spiraliter) striata, saturate nigro-fusca, suturam infra zona lata 

 dilute sordido-carnea cincta ; anfract. 6 1-2, primi 3 1-2 subplani cceteri con- 

 vexi ; sutura haud jnarginata, apertura alba ; perist. margine tenui nigro- 

 purpureo, intus leviter, limbatum; columella rosea, plica laminae formi basali 

 (et interdum tuberculis 1-2) munita. Long. 20, diam. 12 mill. 



Shell dextral, globose-conic, perforate, hardly shining, longi- 

 tudinally roughly (not spirally) striated, dark black-brown, en- 

 circled below the suture with a broad, pale, dirty, flesh-colored 

 band; whorls 61-2, first 31-2 somewhat flat, the rest convex; 

 suture not marginate; aperture white; the thin margin of the lip 

 black-purple, lightly thickened within; columella rose, furnished 

 with a lamina-like basal fold (and sometimes with 1-2 tubercles). 



Affinities. It is allied to Am. spii'izona Fer., which is con- 

 fined to another range of mountains, is found almost exclusively 

 on the ground, and has a spire somewhat convex, while this is 

 regularly conical. — Sm, 



Remarks. This species is invariably dextral. — Sm. 



Hab. The metropolis of the species is Wahiawa. It is also 

 found in all the vallevs from Kalaikoa to Waimea. 



252. Achatinella rndis Pfeiffer. 



A. rudis Pfr. P. Zool. Soc. London, 1855, p. 5, pi. xxx, fig. 17. 



A. testa subimperforata, ovato-turrita, solida, ruditer striata, fulvo- 

 fusca; spira elevato-conica, acutiuscula; sutura simplice, levissime crenulata; 

 anfr. 7 1-2, modice convexis, ultimo 2-5 longitudinis vix formante, rotundato; 

 apertura obliqua, sinuato-ovali; plica columellari mediana, laminseformi, 

 subtransversa ; perist. simplice, recto, acuto, margine columellari dilatato 

 reflexo, subadnato. Long. 21, diam. 11 1-2 mill. 



B. castanea, fascia mediana et basi lutescentibus, spira minus elongata. 



Shell subimperf orate, ovate-turreted, solid, roughly striate, 

 yellowish brown ; spire elongate-conic, somewhat acute ; suture 

 simple, very lightly crenulate; whorls 71-2, moderately convex, 

 the last hardly forming 2-5 of the length, rotundate; aperture ob- 

 lique, sinuately oval ; columellar fold median, lamelliform, sub- 



