214 AMERICAN JOURNAL 



outer lip expanded, sub-reflected below ; sub-umbilicatecl. Col- 

 or, a grayish-white, with numerous blotches and zigzag mark- 

 ings of brown, more obscure on the last whorl ; aperture and 

 lip of a dingy white. 



Long. ||; lat g$ poll. 



Habitat. — Molokai. 



Remarks. — This is also a rare species, offering but few 

 varieties, the only variation from the type being the one fig- 

 ured, in which the suture, instead of being simple, is, in the 

 last whorl, strongly corded. 



10. Achatinella physa, Newcomb. 



Proc. Boston N. H. Soc, 1855. 



Plate 13, fig. 10. 



Description. — Shell sinistral, pointed at the summit, strongly 

 inflated below, rudely striated obliquely ; whorls 6, first five 

 flatly convex, the last largely inflated and obsoletely carinated ; 

 suture simple and deeply impressed ; columella short, slightly 

 callous, broad, and partially covering a deep umbilicus ; aper- 

 ture large, semi-ovate ; lip sub-reflected below, thin and simple 

 above. Color of a dingy white, occasionally marked with 

 yellow flammules, internally of a light lemon yellow, some- 

 times white. 



Originally described in Zoological Proceedings, London, 

 1854, plate 2-i, fig. 6-1, in an immature state. 



Long. 1, lat. *6. 



Habitat. — Hawaii. 



Remarks. — This is much the largest of the Physoid group 

 of Achatinellse, to which we refer A. Helena, Newcomb, from 

 Molokai, A. dubia, Newcomb, from Oahu, and A. rjrisea, New- 

 comb, from Maui. The specimen figured is the largest-sized 

 specimen that I have seen, the measurements rarely reaching 

 to the size given. 



11. Achatinella tetrao, Newcomb. 



Boston Proc, 1855. Eepublished in Zool. Proc, at a sub- 

 sequent date. 



Plate 13, figs. 11, 12. 



Description. — Shell sinistral, acutely conical, pointed at the 

 summit, inflated below ; whorls 6, rounded ; suture deep ; aper- 

 ture sub-ovate; columella short and broadly plicate. Color 

 white, covered by a thin epidermis, with black or brown un- 

 dulations, 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. 



