18 LEPTACHATINA, GROUP E. 



Achatinella terebralis GUL., Ann. Lye. N. Y., vi, 1856, p. 

 193, pi. 6, fig. 21. Achatinella (Leptachatina,) terebralis 

 PFR., Mon. Hel. Viv., vi, p. 185. Leptachatina terebralis 

 PEASE, P. Z. S., 1869, p. 651. SYKES, Proc. Mai. Soc. Lond., 

 iii, pi. 14, fig. 3 ; Fauna Haw., ii, p. 371. 



"Resembles A. turrit a and subula Nob., but is thicker and 

 heavier than either, and has fewer whorls. The shorter 

 variety seems to revert to the form of A. lagena Nob., which 

 in geographical relation is within five or six miles, and in 

 affinity is probably more nearly allied to this than are 

 A. turrit a and subula, found in more distant parts of the 

 island. The number of its whorls and its thicker structure 

 favor this opinion." (Gulick.) 



L. terebralis seems to be also related to L. gracilis Pfr. It 

 is slightly narrower in proportion to its length and the spire 

 is more turrited. Mr. Sykes' figure of the type is copied in 

 fig. 15. 



E. Group of L. obsoleta. 



21. L. CYLINDRATA Pease. PI. 8, figs. 63, 64. 



"The shell is thin, dextral, glossy, imperforate, elongate, 

 sub cylindrical, longitudinally faintly striate, scarcely crenu- 

 late at the suture, yellowish corneous; whorls 6, nearly flat, 

 the last equal to % of the length; apex obtuse; suture im- 

 pressed ; eolumella simple, arcuate ; aperture vertical, oblong 

 ovate; lip simple. Length 8, diam. 2.5 mm." (Pse.) 



Kauai : Kilohana, near Lihue, Waiakoali (Cooke). 



Leptachatina cylindrata PEASE, Journ. de Conchyl., 1869, 

 p. 168. Achatinella (Leptachatina) cylindrata PFR., Mon. 

 Hel. Viv., viii, p. 246. Leptachatina exilis Gul., SYKES, 

 Fauna Haw., ii, 1900, p. 361. 



A shell from the former locality agrees exactly with Pease's 

 measurements and has the aperture 2.8 mm. in length. 



Mr. Sykes reduced this species to a synonym of L. exilis 

 Gul. I have compared specimens of each species, sent by 

 their respective authors to the Academy N. S. Phila., and 

 find the following differences : L. exilis is smaller with the 



