268 Bulletin American Museum of Natural History | [Vol. LIII 
Melania subaurita Brot, 1868, ‘Matér. Et. Mélaniens,’ IT, p. 43, Pl. 1, figs. 1-3. 
Melania soriculata Morevet, 1864, Journ. de Conchyl., XII, p. 287 (Grand 
Bassam). | 
San Antonio, on the left bank of the Congo estuary, in Angola (H. 
Lang Coll.). Moanda, over one hundred specimens (H. Lang Coll.). 
The neanic stage agrees with that of P. fusca in having somewhat 
protractive axial ribs, but they are smaller and more numerous, and are 
covered by a greater number of spiral cords and threads. 
In the large form from Moanda (Pl. XXIII, figs. 1-1c) the spiral 
threads become weak or subobsolete on the later whorls. Five to seven 
whorls have the compressed peripheral tubercles characteristic of the 
species. These do not arise from enlargement of a single spiral, as in 
P. fusca, but are enlargements of the lower part of each axial rib. On the 
last whorl there are about ten (9-11) tubercles. 
A series from San Antonio, on sandbanks at low tide, consists of 
smaller examples when apparently adult, mainly 35 to 40 mm. long; one 
45, one 45.9, in several hundred collected. Tubercles 9 or 10 on last 
whorl. In this lot there are many relatively large individuals (up to 30 
mm. long) retaining sculpture of the neanic stage (Pl. XXIII, figs. 2-29). 
Pachymelania fusca (Gmelin) 
Plate XXIII, Figures 3-3h and 44a; Plate XXIV 
Murex fuscus GMELIN, 1791, in Linneus, ‘Syst. Nat.,’ Ed. x11, p. 3561 (without 
locality). | 
Melania fusca Gmelin. Reeve, 1860, ‘Conch. Iconica,’ XII, Melania, Pl. xxx, 
figs. 200a-c (Senegal). | 
Murex fuscatus Maron, 1804, Trans. Linn. Soc. London, VIII, p. 149, Pl. rv, 
fig. 6. 
Melinia fusca'a HANLEY, 1854-58, ‘Conchol. Miscellany,’ Melaniade, Pl. 1, fig. 1. 
Melania matoni Gray, 1831, ‘Zoolog. Miscellany,’ p. 10. 
Claviger matoni Gray. Brot, 1874, in Martini and Chemnitz, ‘Syst. Conch. 
Cab., I, 24, Melaniaceen,’ p. 366, PI. XXXVII, figs. 3, 3a-f, and 4a-b [Senegal; Calabar; 
Victoria (Cameroon)]. DavTZENBERG, 1912, Ann. Inst. Océanogr. Monaco, V, 3, 
Pp. 49. 0. KR. Bamiersn, 1918. Ann, Soc. Zool. Malacol. Belgique, XLVII, (1912) 
p. 100. 7 
Melania quadriseriaia GRay, 1831, ‘Zoolog. Miscellany,’ p. 10 (coast of Africa). 
HANLEY, 1854-58, ‘Conchol. Miscellany,’ Melaniade, Pl. 1, fig. 9. Brot, 1868, 
‘Matér. Et. Mélaniens,’ II, p. 47 (as typica). 
Clavigerina fusca quadris-ricta Gray. E. v. Martens, 1903, ‘Wiss. Ergebn. 
Deutsch. Tiefsee-Exp.,’ VII, 1, p. 19. 
Melinia mutans Goutp, 1843, Proce. Boston Soc. Nat. Hist., I, p. 159 (Liberia); 
1862, ‘Otia Concholog.,’ p. 193 (synonymizes it with fusca Gmelin). Reve, 1860, 
‘Conchol. Iconieca,’ XII, Melonia, Pl. xxx11, fio, 215, 
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