On'i^inal Descriptions of Achatinclla. gg 



Hab. Kalae.— Bald. 



Over one huiidred examples of this shell are in the author's 

 collection. The zigzag markings on upper whorls of a few ex- 

 amples look somewhat like those of A. tcsscllata Newc. 



154. Achatinella proxima Pease. 



Hclictci pioxhiiiii Pease, r. Zool. Soc. London, 1862, p. 6. 



Shell sinistral, imperforate, oblong-ovate, ventricosc, rather 

 solid, finely striated transversely ; striae somewhat fiexuous, grau- 

 ulose, and interrupted, more regular and conspicuous beneath the 

 sutures. Whorls 6, convex, marginated, the last somewhat produced 

 obliquely and flattened on the middle, so as to give in some speci- 

 mens a subangulated appearance at the base. Aperture somewhat 

 oblique, of an oblong ovate form ; columellar fold strong. Colour 

 chestnut-brown, striped and mottled irregularly with dark or brown 

 and white ; columella and inner edge of aperture purplish red. 



Hab. Waikolu.— Bald. 



155. Achatinella theodorei Baldwin. 



A. tlici\ioit-i Bald. P. Ac. Philad. 1*^95. p. 226, pi. x. fig. 27. 



Shell sinistral, subperforate, rather thin, elongately conical, 

 apex subacute ; surface shining, sculptured with somewhat irregu- 

 lar incremental striae, and under a lens exhibiting extremely close 

 and minute decussating spiral striae ; nuclear whorls smooth. 

 Color dingy white, striped and mottled irregularly with longitudi- 

 nal dark brown streaks. Whorls -, lightly marginate above, 

 slightly convex: suture moderately impressed. Aperture oblique, 

 o\al, purplish brown within; peristome acute, margined with 

 brown, ver>- lightly thickened within, columellar margin slightly 

 reflexed, columella terminating in a slight, flexuous, brown fold. 

 Length i8 1-2, diam. 9 mm. 



The animal has not as }et been observed. The shell belongs 

 to the group of small elongately conical Partulina, for which Mr. 

 Harper Pease proposed the name Perdicella as a subgeneric title. 



The nearest allied species is A. oriiata Newc, which is of 

 much smaller size, more delicate markings, has a peripheral dark 

 band and inhabits a different island. — Bald. 



Hab. Kawela.— Bald. 



It seems to be somewhat related to the smaller forms of 

 A. proxi])ia Pse. 



z^ 



