LEPTACHATINA, GROUP K. 53 



Perkins in Kawailoa Gulch and referred to this species by 

 Sykes belong to L. dimidiata Pfr. 



Achatinella cingula MIGHELS, P. Bost. Soc., ii, 1845, p. 21. 

 -PFEIFFER, Mon. Hel. Viv., ii, p. 242. NEWCOMB, Ann. Lye. 

 N. Y., vi, 1858, p. 313. Not Achatinella cingula PFR., Conch. 

 Cab., Achatinella, p. 288, pi. 57, figs. 5-7 ; Mon. Hel. Viv., iii, 

 p. 467. Achatinella (Leptachatina) cingula PFEIFFER, Mon. 

 Hel. Viv., iv, p. 567. Leptachatina cingula PEASE, P. Z. S., 

 London, 1869, p. 651. Achatinella fumosa NEWCOMB, P. Z. S. 

 London, 1853, p. 140, pi. 23, fig. 28. Achatinella (Lepta- 

 chatina) fumosa PFEIFFER, Mon. Hel. Viv., iv, p. 563. Labiella 

 fumosa PEASE, P. Z. S. London, 1869, p. 651. Leptachatina 

 fumosa BALDWIN, Cat. Haw. Shells, 1893, p. 11. SYKES, 

 Fauna Haw., ii, Moll., p. 362. Achatinella vitrea NEWCOMB, 

 P. Z. S. London, 1853, p. 142, pi. 23, fig. 34. PFEIFFER, Mon. 

 Hel. Viv., iv, p. 564. La~biella vitrea PEASE, P. Z. S. Lon- 

 don, 1869, p. 651. Leptachatina vitrea BALDWIN, Cat. Haw. 

 Shells, 1893, p. 12. SYKES, Fauna Haw., ii, Moll., p. 372. 



I have included Newcomb 's two species with cingula, as 

 Newcomb himself considered that vitrea might possibly be 

 the same as cingula (vide Ann. Lye. N. Y., vi, 1858, p. 313), 

 and there is no doubt, in my mind, that both vitrea and 

 fumosa belong to the same species, as a series of these shells 

 collected near the head of Palolo Valley intergrades perfectly. 

 I do not think that L. dimidiata can possibly be a form of 

 cingula. Figs. 86, 87, 88 are from Palolo. Fig. 85 from 

 Manoa, 



Measurements of some specimens are as follows : 



Length 15.2, diani. 6.3 mm. (Newcomb for fumosa}. 



Length 12.7, diam. 6.3 mm. (Newcomb for vitrea}. 



Length 13.8, diam. 6.7, length of apert. 6.3 mm. A. N. S. P. 

 no. 91790. 



Length 13.0, diam. 5.9, length of apert, 5.6 mm. A. N. S. P. 

 no. 91790. 



Length 12.8, diam. 6.4, length of apert. 6.0 mm. A. N. S. P. 

 no. 57803 from Newcomb as L. fumosa. 



