Original Descriptions of Achatinella. 163 



287. Achatinella humilis Xewcomb. 



A. humilis Xewc. Am. Jour. Conch., ii. iS66, p. 211, pi. xiii, fig. 4. 



Shell elongatelj- conical, longitudinally rudely striate; whorls 7, 

 rounded above flattened centrally, last one obscurely carinated 

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

 lip acute, slighth- 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. Long. 14-20, 

 lat. 7-20 in. 



Remarks. We have very little variety to note in this species, 

 which was obtained in considerable numbers at the locality- men- 

 tioned above on only one occasion. Subsequent researches of the 

 same ground failed in obtaining specimens. — Xewc. 



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

 288. Achatinella uniplicata Hartman. 



A. uniplicata Hartman. P. Ac. Phil., iSSS, p. 50. pi. i. fig. 7. 



Shell dextral, solid, elongate oval, occasionallj- 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 

 Xewc, 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 2i7iiplicata 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. 



Hab. Kamalo. — Bald. 



289. Achatinella umbrosa Baldwin. 



Amastra jimbrosa Bald. P. Ac. Phil., 1S95, p. 229, pi. xi, figs. 36, 37. 



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

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

 the low^er whorls spirally maleated; the embr\-onic whorls finely 

 radiateh' sulcated; color w4iite, apex dark chestnut; nearlj- the 

 whole surface covered with irregular streaks of a black, fugacious 

 epidermis, worn ofl in front of the aperture; whorls 6, slighth' con- 

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

 white within; peristome acute, thickened within, expanded; colu- 

 mella white, flexuous, abruptly terminating in a somewhat thick 

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



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