Origi7iaI Descriptions of AchatincUa. 107 



surface delicately striated with lines of growth ; colour a dusky 

 chestnut, marbled with white, irregular, and angular markings, 

 generally arranged somewhat in longitudinal stripes, the whole 

 seeming to be coated with a very thin ash-coloured epidermis. 

 Aperture moderately large, ovate, the lip slightly expanded ; the 

 columellar fold white, compressed, near!}- transverse, and standing 

 out very prominently. Length 7-8, breadth r-2 in. — U. S. Ex. 

 Ex., vol. xii, p. CS5. 



Animal light pea green, strongly granulated, one-third longer 

 thati the shell, tentacles light slate ; mantle and base of foot same 

 color as the body. Dr. Pfeiffer allows viarmorata Gould, but places 

 adamsii Xewc. as a synonym of A. perdix Rve. I have clearly 

 established the identity of my shell with that of Dr. Gould, and do 

 not doubt the specific difference of viarmorata and perdix . As Mr. 

 Reeve's description dates 1S50, those who do not concur in this 

 opinion must place A. perdix as a synonym of x4 . viarmorata. 

 — Newc. 



Hab. At the foot of Mt. Haleakala. — Gould. Makawao. 



This shell is very rarely sinistral. In over one thousand ex- 

 amples only one sinistral specimen was found. 



172. Achatinella adamsii Xewc. 



.1. adaniiii P. Zool. Soc. London. iS5,^, p. 137. pi. xxii. fig. ao. 



Shell dextral, conically acuminate, whorls 6, finely striated 

 transversely, roughly striated longitudinally ; suture deeply im- 

 pre.s.sed ; lip expanded ; columella terminating in a strong abruptly 

 twisted plait : interior of shell of a leaden blue colour, exterior 

 dark chestnut, irregularly mottled and striped with white. Long. 

 18/20, lat. 9/20 poll. 



This species makes the nearest approach in form to A . perdix 

 of Reeve, an immature specimen of which is figured in his Mono- 

 graph, figure 43. The locality of this latter species is the almo.st 

 inaccessible ravines of the mountainous districts around Lahaina, 

 W. Maui. The A. perdix is arboreal, and the A. adamsii terres- 

 trial in its habits. — Newc. 



Hab. Makawao. 



Baldwin places this with A. viarmorata Gould. 



173. Achatinella plumbea Gulick. 



.'(. plumhea Gk. Ann. I,yc. New Voik, iv. I'.^G. \>. 21.5, pi. vii, fig. 39. 



Shell dextral, sometimes perforate, ovate-conic, solid, shining, 

 irregularly striated, ver\- finely decussated, lead-coloreil, with a 

 white band on the periphery of the last whorl ; apex subacute ; 



