LOBIGER. 167 



L. SERRADIFALCI Calcara. PI. 10, figs. 27, 28, 29, 30, 31, 32, 33, 



36. 



Shell ovate, delicate thin and fragile, subtransparent, and 

 corneous; delicately striated; involute, the spire umbilicated. 

 Aperture as long as the shell, oblong, narrowed above, broadly 

 rounded below, produced far above the apex of the shell. Outer 

 lip regularly arcuate, basal lip effuse, columella thin, broadly con- 

 cave below, with a conspicuous reflexed margin across the preceding 

 whorl. Alt. 12, diam. 8* mill. 



Animal elongated, the posterior part and outer surface of pleuro- 

 podial lobes bearing numerous scattered conic papillae. Color 

 citron-yellow, with a perceptible greenish tinge, the sole a more 

 diluted tint. Pleuropodial lobes broad and rounded, with narrow 

 bases ; edged by a white line, within which is a crimson line ; the 

 papillae of the surface showing the same distribution of color. 

 Length slightly exceeding one inch. 



Mediterranean Sea: Bay of Palermo (Calcara et al.) ; Messina 

 (Krohn) ; Bay of Naples (Mazzarelli) ; Gulf of Marseilles (Vays- 

 siere). 



Lobiger philippii KROHN, Ann. Sci. Nat. (3),vii, 1847, p. 52, pi. 

 2, f. 1, 2. SOULEYET, Journ. de Conch., 1850, p. 232, pi. 10, f. 13, 

 14 (shell). FISCHER, Journ. de Conch., vii, 1856, p. 274. A. 

 ADAMS, in Sowb., Thes., ii, pp. 598, 602, pi. 121, f. 57 ; pi. 119, f. 

 18. MORCH, Journ. de Conch., 1863, p. 47. VAYSSIERE, Rech. 

 Zool. Moll. Opistobr., Tectibranches, in Ann. Mus. d'Hist. Nat. 

 Marseille, Zool., ii, pp. 177, 100. Bullea serradifalci CALCARA, 

 Monografie dei generi Clausilia e Bulimo, coll ' aggiunta di alcune 

 nuove specie di Conchiglie Siciliane, p. 44 (1840). Lobiger serradi- 

 falci MONTS., Journ. de Conch., 1878, p. 159. MAZZARELLI, Boll, 

 della Societa di Naturalisti in Napoli, vi, 1892, p. 98 (anatomy). 

 Lobiger corneus MORCH, Journ. de Conch., 1863, p. 48 (based solely 

 upon figure of shell in Thes. Conch., pi. 121, f. 57). 



The first description of this species is that of Calcara in 1840, 

 Krohn's being seven years later. Morch's L. corneus is utterly with- 

 out distinctive characters. 



L. PELLUCIDUS A. Adams. 



Shell oval, subinvolute, white, fragile, pellucid ; longitudinally 

 substriate, the spire concealed. Aperture oblong, ample, produced 

 and somewhat narrowed behind, dilated in front; inner lip thin, 

 subreflexed, outer lip arcuate with the margin acute. (Ad.~). 



Habitat unknown (Cuming coll.). 



