Original Descriptions of Achatinella. 131 



212. Achatinella tetrao Newcomb. 



A. tetrao Newc. Am. Jour. Conch., 1866, ii, p. 214, pi. xiii, figs. 11, 12. 



Shell sinistral, acutely conical, pointed at the summit, inflated 

 below; whorls 6, rounded; suture deep; aperture subovate; colu- 

 mella short and broadly plicate; color white, covered with a thin 

 epidermis, with black and brown undulations often so dense as to 

 cover most of the shell; a broad sutural carmine band is a constant 

 character; aperture within white; columella and adjoining portion 

 of the base of the shell pink or orange. Long. 15/20, lat. 9/20 poll. 



Remarks. There is a beautiful group of these finely painted 

 acuminate Achatinellae, commencing with A. venusta Mighels, and 

 containing the following series: A.vemista Mighels, A.citrina 

 Mighels, A. /rwj/Newc, A. sanguinea Newc, A. tetrao Newc, 

 A. picta Mighels. The four central islands of the group are repre- 

 sented by these species, the first two from Molokai, sanguinea from 

 Oahu, picta from Maui, the other two from Lahaina. — Newc. 



A fine, light colored variety, with a rosy tip, is occasionally 

 found, but is much less common than those with a dark epidermis 

 studded with small, white triangular markings. — Newc. 



Animal, above tessellated brown and white; mantle of a dusky 

 yellow; bottom of foot of same color; margined with white; ten- 

 tacles long and of light brown; motions timid. — Newc. (An. Lye 

 New York, vi, p. 334.) 



Hab. Mountains and behind Koele. — Perkins. 



It may be noted that A . ferussaci Pfr. has been omitted from 

 this association as the typical shell in Mr. Cumings collection is a 

 worn, rather large sized sanguinea. 



213. Achatinella concinna Newcomb. 



A. concinna Newc. P. Zool. Soc. London, 1S53, p. 157, pi. xxiv. fig. 79. 



Shell dextrorsal, umbilicated, longitudinally very finely stri- 

 ated, rather shining; whorls 6, convex; suture impressed; aperture 

 ovate; columella short, straight, the margin reflected, furnished 

 anteriorly with a spiral plait; outer lip simple, acute; color pale 

 yellow; the uppermost whorls rosy. 



Hab. Koele side of highest point, and near Koele at 3000 

 feet. — Perkins. 



This shell does not belong in the Remyi group, but being from 

 Lanai is placed here at the end. 



