MELAMPUS. 559 
Anim, ‘sans Vert. ed. 1, vi. p. 141; ed. 2, par Deshayes, viii. p. 332°; Reeve, Conch. 
Syst. nu. t. 187. fig. 7°; Kiister, in Martini & Chemnitz, Syst. Conch.-Cab, ed. 2, 
Auriculaceen, p. 31, t. 4. figg. 14-17 3 @Orbigny, in Sagra’s Hist. fis. polit. y nat. de 
_ Cuba, p. 100, t. 18. figg. 4, 777. 
Conovulus coniformis, Lamarck, in Encycl. Méth., Vers, iii. t. 459. fig. 3°°; Woodw. Manual of 
_ Mollusea, p. 178, t. 12. fig, 37 74, 
Melampus fasciatus (Chemnitz), Tristram, P. Z. S. 1861, p. 232°. 
Hab. EB. Muxtco: without nearer indication of locality &7, 
Yucatan: Island of Carmen, in the Laguna de Terminos (Uhde’); Progreso and 
Silam (Heilprin 12), 
British Honpuras: Belize, in salt-marshes (Bocourt 1°), 
N. GuaATEMALA: salt-marshes on the coast (Salvin 5), 
Generally spread in the West-Indian Islands—Cuba¢ 22, Jamaica (C. B. Adams), 
Haiti (jalmarson), Puerto Rico (Blauner), Guadaloupe (Beau), Martinique 
(C. de Candé?*); also occurring in Texas (Pope) and the Florida Keys (Wurde- 
mann), and on the continent of South America—Venezuela (Ernst), Cayenne 6, 
Bahia (Luschnath, in Mus. Berol.), Lagoa de Tejuca near Rio Janeiro (v. Martens, 
1860), and Santa Catarina in Southern Brazil (Fritz Miiller). 
Pfeiffer® also gives Labrador as a locality, but this is probably a mistake for 
Barbados. Pilsbry ” distinguishes a variety, mécrospira, found with typical specimens 
at Progreso, Yucatan. 
2. Melampus trilineatus. (Tab. XLIII. fig. 7.) 
Auricula trilineata, C. B. Adams, Ann. Lyc. Nat. Hist. N. York, v. p. 484 (1852); Carpenter, 
Report Moll. West Coast of N. Am. p. 275 (1857) *. 
Melampus trilineatus, Pfeiffer, Monogr. Auric. p. 44°; Catal. Auric. Brit. Mus. p. 32%. 
Hab. W. Costa Rica: Punta Arenas (coll. Strebel). 
S. Panama: Panama (C. B. Adams 1). 
Five specimens in Strebel’s collection show that this species agrees well in general 
form and colour with MV. coffea from the Atlantic coast, but differs from it in having 
4-5 small horizontal parietal folds above the large parietal one, and in the absence of a 
smaller one below this. C. B. Adams! states that there are four folds: I can see five 
in the full-grown and somewhat younger specimens from Punta Arenas, but the upper- 
most are very small; in the still younger ones there are two only. The general colour 
is brownish-grey, with irregular darker vertical streaks and two or three spiral bands, 
the uppermost in the largest diameter of the shell, the lowest at about half the height 
of the last whorl; the third band is only visible in two out of five specimens, and in 
one of these it disappears in the lower half of the last whorl; the bands also tend to 
disappear near the aperture, even when two only are present. The reddish colour of 
the columella is very faintly indicated. 
