118 PTERODISCUS. 



This species and C. bicolor resemble Amastra much more 

 closely than the species having the basal volution angulated. 



Species incorrectly described as Carelia. 

 C. glutinosa Ancey. 



Shell long-conoid, imperf orate, solid; white under a var- 

 nish-like glossy buff cuticle, which is darker on the last 

 whorl, yellowish-green at the summit. Spire long-conic, sub- 

 acute, regularly tapering to the summit. Whorls 7, flattened, 

 the lower ones a little convex, grooved with very close, slightly 

 oblique growth-strige, which are somewhat obsolete in the 

 last two or three whorls, very distinct in the upper whorls, 

 and are especially impressed at the linear suture; last whorl 

 smooth, oblong, obtusely angular at the periphery (perhaps 

 by accident). Aperture oblique, rather wide, scarcely angu- 

 lar outwardly, tapering above and below, the throat white. 

 Peristome simple, acute, unexpanded, the margins remote. 

 Length 24, diam. 10, alt. of aperture 8.5 mm. (Anc.) 



Habitat unknown. 



Carelia glutinosa ANC., Memoires de la Societe Zoologique 

 de France vi, p. 324, 1893. 



"This very characteristic species has been in my collection 

 several years. It was formerly in the Boivin collection. It 

 is the smallest of the genus, and easy to recognize by the 

 long cone of the spire, the brilliant yellow cuticle, and the 

 shape of the aperture, wide in the middle, etc." (Anc.) 



This species is not Hawaiian but belongs to the African 

 group Homorus or Bocageia in Achatinida (Vol. XVII). 



Genus PTERODISCUS Pilsbry. 



Pterodiscus PILS., Manual of Conchology (Series 2), IX, 

 p. 36, November 16, 1893, type " H. alata Pfr." Pils., = 

 P. wesleyi Sykes. SYKES, Fauna Hawaiiensis, Mollusca, 

 1900, p. 292. PILSBRY and VANATTA, Proc. A. N. S. PhiK 

 1905, p. 572. Helicamastra PILSBRY and VANATTA, Proc. 

 A. N. S. Phila. 1905, p. 570, type Amastra discus Tropi- 

 doptera ANCEY, Bull. Soc. Malac. France vi, 1889, p. 191, 



