E 
BLAUNERIA. LEUCONIA. 569 
3. B. Leonardi Crosse. 1 
T. sinistrorsa, oblongo-ovata, tenuissima, laevigata, hya- 
lina; spira elongata, apice obtusulo; sutura leviter impressa; 
anfr, 6 plani, ultimus spiram subaequans; apertura subangusta, 
lanceolata; peristoma simplex, margine columellari brevi, sub- 
incrassato, basali et externo acutis; paries aperturalis prope 
columellam sat valide uniplicatus. — Long. 2!/, diam. maj. 
vix 1 mill.* (C.) 
DBlauneria Leonardi Crosse in Journ. Conch. XX. 1872. p. 71. 357. t. 16. f. 4. 
Habitat in vicinio civitatis Noumea Novae Caledoniae 
(Leonard). 
Obs. ,Species a B. pellucida Pfr. et gracili Pease bene distinguenda, 
multo minor et subovata, nec turrita.* 
XII. Leuconia Gray. 
Pfr. Mon. Auric. p. 154; Auric. Brit. Mus. p. 117. — 
W. G. Binney Terr. Moll. Un. St. IV. 1859. p. 177; Land- 
and freshw. sh. North-Am. II. 1865. p. 18: genus Melampi- 
narum. — tel Catal. 1813. p. 16. 115: genus Auriculeorum. 
Species. 
l. bidentata Mont. (Coll. 1.) I. 154. II. 117. — Patel Cat. p. 115. — 
- Voluta bidentata et alba Mont. —  Jaminia bidentata Leach. — Au- 
ricula bidentata et alba Flem., erosa Jeffr. —  Conovulus bidentatus 
et albus Gray, bidens Gray. —  Acteon bidentatus et Volvaria alba 
Flem. — .Leuconia alba H. & .A. Adams. — Britannia. 
2. Micheli (Auricula) Mittre. I. 156. II. 119. — "Toulon Galliae. 
3. Bivonae (Auricula) Philippi. (Coll. 2.) I. 156. II. 119. — Patel 
Cat. p. 115. — Oevatella bidentata. .Biv. — Auricula myosotis 8 Phil. 
— Sicilia. 
i. L. opportuna (Auricula) Gould. 7 
»1l. parva, ellipsoidea, solida, livido-albida, laevis; anfr. 6 
ad suturam imbricato-appressis. Apertura falcata, postice acu- 
tissima, antice rotundata; labio lamella compressa elevata me- 
diana et lamella duplici anticali obliqua instructo; labro sim- 
plici. — Long. 8, diam. 4 mill* (G.) 
Auricula opporluna ( Leuconia) Gould in Proc. Bost. Soc. VII. Jul. 1859; 
Otia conch. p. 105. 
Habitat in insulis: Loo Choo. 
* 
24. 
