Origitial Descriptions of Achatinella. 163 



287. Achatinella humilis Newcomb. 



A. humilis Newc. A:u. Jour. Conch., ii, iS66, p. 211, pi. xiii, fig. 4. 



Shell elongatel}' conical, longitudinally rudely striate; whorls 7, 

 rounded above flattened centrally, last one obscurely carinated 

 superiorly; suture deep, simple; apex acute; aperture subrotund; 

 lip acute, slightly thickened within ; columella flattened with a 

 thick plait ; color of shell pale salmon, covered with a densely black 

 epidermis; columella and a deep margin of the outer lip within 

 dark brown ; interior of aperture bluish white. L,ong. 14-20, 

 lat. 7-20 in. 



Remarks. We have ver}^ little variety to note in this species, 

 which was obtained in considerable numbers at the locality men- 

 tioned above on onl}- one occasion. Subsequent researches of the 

 same ground failed in obtaining specimens. — Newc. 



Hab. Kalae, on the ground under low bushes. — Newc. 

 a88. Achatinella uniplicata Hartman. 



A. xmiplicata Hartiuan. P. Ac. Phil., iS88, p. 50, pi. i, fig. 7. 



Shell dextral, solid, elongate oval, occasionally cylindrical, 

 whorls 7, slighth' rounded, the last somewhat inflated, suture im- 

 pressed, longitudinally striate, aperture suboval, white; a single 

 white elongate twisted plica within; outer lip acute, color of the 

 shell a pale ochre-yellow, concealed by a black epidermis. ly. 20, 

 d. 9; aperture 28 [sic], d. 4 mill. 



Obs. This shell is from a different island from A. biplicata 

 Newc, which it resembles, the latter possesses more coarse longi- 

 tudinal striae, and has a double plicae [sic] within, and the aper- 

 ture is red, while 2iniplicata has a single plicae [sic], and the ap- 

 erture is white. The Pease collection contained a large number 

 of duplicates marked "new species" by Mr. Pease. — Hart. 



Hal:). Kamalo. — Bald. 



289. Achatinella umbrosa Baldwin. 



Amastra umbrosa Bald. P. Ac. Phil., 1895, p. 229, pi. xi, figs. 36, 37. 



vShell dextral, imperforate, solid, globosely ovate-conic; sur- 

 face lustreless, covered with close, rather regular growth .striae; 

 the lower whorls spirally maleated; the embryonic whorls finely 

 radiately sulcated; color white, apex dark chestnut; nearly the 

 whole surface covered with irregular streaks of a black, fugacious 

 epidermis, worn off in front of the aperture; whorls 6, slightly con- 

 vex, the last somewliat inflated; aperture ovate, a little oblique, 

 white within; i)eristome acute, thickened within, expanded; colu- 

 mella white, flexuous, abruptly terminating in a somewhat thick 

 lamellar plait. Length 21, diam. 12 1-2 mm. 



