78 AURICULELLA, OAHU. 



This species differs from A. auricula in its much more elon- 

 gately conic form, thinner shell, shape of aperture, etc. It 

 has some, probably superficial, resemblance to A. tenella 

 Anc. The mantle is white, irregularly mottled with narrow, 

 nearly black patches. No sinistral specimens have been found 

 in over two hundred individuals examined. A few specimens 

 have a slightly brownish spire. The average measurements 

 of 8 adult specimens are : Length 7.6, diam. 3.9 mm. 



3. A. AURICULA (Ferussac). PI. 24, figs. 1 to 10. 



" Shell ovately acute, imperf orate, slightly thickened, some- 

 what striate, yellowish; spire conical, apex obtuse. Whorls 

 5, contiguous, the last ventricose, subcarinate. Aperture 

 subquadrangular ; lip acute, thickened within, with flexuous 

 outer margin ; columella unidentate. Furnished, in the depth 

 of the aperture, with an elevated strongly marked lamella. 

 Length 3, diarn 1ft lines (6.8x4.0 mm.)." (Fer.) 



Hab. Oahu: Tantalus (Perkins, Cooke), Nuuanu, Pauoa 

 and Palolo (Cooke). Also westward north of the main range. 



Partula auricula FERUSSAC, Prod., 1821, p. 66, no. 6; 

 QUOY and GAIMARD, Voy. autour du Monde, Uranie et Psysici- 

 enne, Zool., p. 468. SOULEYET, Voy. de la Bonite, Zool., ii, 

 1852, p. 511, pi. 29, figs. 9-11. PFEIFFER, Conchyl. Cab., Par- 

 tula, p. 277. REEVE, Conch. Icon., Partula, no. 18. Buli- 

 mus auricula PFEIFFER, Mon. Hel. Viv., ii, 1848, p. 75. 

 Achatinella (Auriculella) auricula PFEIFFER, P. Z. S. Lon- 

 don, 1855, p. 1 ; Mon. Hel. Viv., iv, p. 569 ; vi, p. 187. Auri- 

 culella auricula PEASE, P. Z. S. London, 1869, p. 649. 

 PFEIFFER, Mon. Hel. Viv., viii, p. 209. ANCEY, Bull. Soc. 

 Malac. France, vi, 1889, p. 211. SYKES, Fauna Hawaiiensis, 

 ii, Moll., p. 375. Auricula owaihiensis CHAMISSO, Nov. Act. 

 Soc. Leop., xiv, 1829, p. 639, pi. 36, fig. 1. KUESTER, Con- 

 chyl. Cab., Auriculacea, 1844, p. 26, pi. 3, figs. 14-16. Auri- 

 cula sinistrorsa CHAMISSO, Nov. Act. Soc. Leop., xiv, 1829, p. 

 640, pi. 36, fig. 2. KUESTER, Conchyl. Cab., Auriculacea, 

 1844, p. 48, pi. 7, figs. 14-16. ANCEY, Bull. Soc. Malac. 

 France, vi, 1889, p. 213. Partula dumartroyii SOULEYET, 

 Revue Zoologique, 1842, p. 102. Bulimus armatus MIGHELS, 



