On'oinal Descriptions of Achatinclla. 99 



Hal). Kalac— Bald. 



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

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

 amples look somewhat like those of A. tcsscllata Newc. 



154. Achatinella proxima Pease. 



Hcluii-r /'i(iAii/n/i Pease. V. Zool. Hoc. I<ondoii, 1.S62, p. 6. 



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

 solid, finely striated transversely : striae somewhat flexuous, gran- 

 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. 



,(. llieodorei Bald. 1'. .\c. Philad. 1895, 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 niarginate above, 

 slightly convex; suture moderately impressed. Aperture oblique, 

 oval, purplish brown within ; peristome acute, margined with 

 brovvu, very lightly thickened within, columellar margin slightly 

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

 Length iS 1-2, diam. 9 mm. 



The animal has not as yet been observed. The shell belongs 

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

 Harper Pease jjroposed the name Perdicella as a subgeneric title. 



The nearest allied species is ./. oniala Newc, which is of 

 much smaller size, more delicate markings, has a i)eripheral dark 

 band and inhabits a different island. — Hald. 



Hab. Kawela. — liald. 



It seems to be somewhat related to the smaller forms of 

 A. proxima Pse. 



