354 HAMINEA. 



Aperture much dilated. Var. subquadrata Monts. Subangular 

 above and below. Var. albina Monts. Entirely white. Var./er- 

 ruginosa Monts. Ferruginous tawny. Var. glaucescens Monts. 

 'Pale yellow or greenish. 



H. HYDATIS Linne. PI. 41, figs. 19, 20. 



Shell thin, subpellucid, oblong-oval, truncated above, rounded 

 below ; surface clear corneous or pale greenish-yellow, with slight 

 growth lines and extremely minute close wavy spiral strise. Ver- 

 tex iraperforate, narrowly concave; outer lip arcuate, rounded 

 above and below, slightly thickened toward the upper insertion. 

 Columella short, vertical, rather straightened, its edge reflexed but 

 not closely appressed. Alt. 11, diam. 8 mill. 



Mediterranean Sea; Atlantic coasts of Spain and France; north 

 to South coast of England. 



Bulla hydatis LINN., Syst. Nat. xii, p, 1183, 1766. HANLEY, 

 Ipsa L. Couch., p. 204. SOWB., Illustr. Ind. Brit. Sh., pi. 20, f. 19. 

 HOGG, Tr. Roy. Mic. Soc., xvi, pi. 13, f. 78 (dentition). Bulla 

 pisum DELLE CHIAJE, An. s. Vert, iii, p. 26. Bulla hyalina GMEL., 

 Syst. xiii, p. 3432. Hdminea elegans of many authors. HIDALGO, 

 Moll. Mar. Esp., p. 3, pi. 21, f. 4, 5. Not H. elegans Leach I Bulla 

 folliculus MKE., Zeitschr. f. Mai., 1853, p. 141. Haminea hydatis 

 BUQ., DAUTZ. & DOLLF., Moll. Rouss. i, p. 515, pi. 163, f. 8, 9. 



This species is distinguished from B. navicula by its smaller size, 

 smoother surface, straighter columella, etc. The following color 

 variations, sufficiently described by their names, have been noted 

 by Monterosato : major, media, minor, oblonga, globosa, virescens, 

 albescens, violacea. 



For the facts relating to Haminea elegans see under West Atlan- 

 tic species. 



H. ORBIGNYANA Ferussac. Unfigured. 



Shell similar to H. hydatis, but outer lip dilated above, rising 

 high above the vertex. Alt. about 12 mill. 



Ocean coast of France, dept. Charente-Inferieure (Fischer) ; 

 Eoclielle (Fer.) ; /. of Aix (Le Bahezre) ; /. of Re (Jeffr.) ; Canary 

 Is. (McAndrew) ; also reported from Falmouth (Leach) ; Dublin 

 Bay (Turton) and Cork Harbor (Humphreys). 



