Original Descriptions of Achatinella. 177 



in land shells found, perhaps, only in Hclicina agglutinans of 

 Sowerb y . 



Entire animal of a sooty black ; superior tentacles strongly 

 clubbed, lower ones with a light colored tip, granulations large; 

 longer than the shell; motions very slow and timid. — Newc. 



Hab. Haleakala. — Newc. Makawao and Kula. — Bald. 

 325. Achatinella nigra Newcomb. 



A. nigra Newc. Am. J. Conch., ii, 1S66, p. 210, pi. xiii, fig. 3. 



Shell dextral, globosely acuminate, rather solid; the two lower 

 whorls inflated, the superior ones subulate ; whorls 6, the last two 

 cut up on the surface into rude cicatrices by longitudinal striae, 

 crossed by revolving elevations, irregularly distributed; superior 

 whorls flattened, with closely crowded, strong, longitudinal striae; 

 suture simple, well impressed ; aperture round ovate ; columella 

 short, terminating in a lamellar tooth; color yellowish white, with 

 a thin black epidermis. Long. .70, lat. .45 in. 



Remarks. This species occupies a middle space between A. 

 obcsa Nob., and A. kauaiensis. In adult specimens the lip is thick- 

 ened by a heavy white deposit, and the tooth from the same cause 

 changes from a lamellar to a nodulous form, as in the specimen 

 figured. — Newc. 



Hab. Ulupalakua. — Bald. 



326. Achatinella gigantea Newcomb. 



A. gigantea Newc. P. Zool. Soc. London, 1853, p. 136, pi. xxii, fig. 17. 



Shell dextral, elongate-oval, apex pointed; whorls 7, strongly 

 striate, slightly cariuated superiorly on the last whorl, inferiorly 

 on the penultimate; columella slightly arched, terminating inter- 

 nally in a slight callosity, externally continued to unite with the 

 outer lip; columellar lip with a strong deposit spread over the 

 surface; outer lip simple; suture deep ; striae longitudinal ; color 

 light plumbeous externally, internally pale lilac. L,ong. 1 1/2, 

 lat. 12/20 poll. 



This species, the largest yet described, belongs to the same 

 group with A. violacca, from Molokai, and A. baldzvinii, from 

 Lanai. — Newc. 



Hab. Haleakala. — Newc. 



327. Achatinella hutchinsonii Pease. 



Helicter hutchinsonii Pease. P. Zool. Soc. London, 1862, p. 7. 



Shell acuminately turreted, sinistral, imperforate ; whorls j, 

 flatly convex, coarsely and irregularly striated longitudinally, not 



Occasional Papers B. P. B. M., Vol. III. — 12. 



