362 SMITHSONIAN MISCELLANEOUS COLLECTIONS [voL. 48 
Lahille, reach sometimes eight inches in length and five and a half 
in diameter. The ovicapsule of what is supposed to be this species 
is figured by Dall in the Proc. U. S. Nat. Museum for 1889, pl. 1x, 
fig. 2. It floats by means of an air bubble, and is nearly spherical. 
The young contained in its resemble those of A. magellanica Lam. 
ADELOMELON FERUSSACII Donovan 
Voluta ferussacii Donovan, Nat. Repos., u, pl. Lxvit, 1824; REEvE, Conch. 
Icon., Voluta, pl. x, fig. 25, 1849; SowrersBy, Thes. Conch., Voluta, 
p. 203, pl. xLvi, fig. 7, 1847. 
Voluta rudis Gray, in Griffiths’ Cuvier, x1, pl. xxx, fig. 1, 1834. 
Voluta brasiliana (pars) Tryon, Man., Iv, p. 98, pl. xxx, fig. 131 
(ferussacii) and pl. xxix, fig. 111 (rudis), 1882. 
Voluta (Aulica) ferussaci Crosse, Journ. de Conchyl., x1x, p. 286, 1871. 
Voluta oviformis LAHILLE, Rev. Mus. de la Plata, v1, p. 313 (extras, p. 
20), pl. 1, figs. 53-56; pl. vit, figs. 121-131; pl. x, figs. 4-9, 1895; with 
varieties longiuscula and fratercula LAHILLE. 
Voluta (Cymbiola) ferussaci STREBEL, Zool. Jahrb., xxiv, p. 100, pl. Ix, 
figs. 46, 46a, 48, 49, 1906. 
Habitat——Coast of Santa Cruz, Patagonia, [hering and Lahille ; 
Puerto Gallegos, Strebel; eastern part of Magellan Straits, Cunning- 
ham; Punta Arenas, Mulach. 
The species reaches a length of five inches by about three and a 
half in diameter. It has one strong anterior plait at the edge of the 
pillar and from two to five lesser ridges behind it; most commonly 
four are visible in well developed shells. It is nearest to but appar- 
ently distinct from V. brasiliana. 
U. S. Nat. Mus., 18,389, 102,381, 171,412. 
This species is described by Cunningham (Notes on Nat. Hist. of 
the Straits of Magellan, p. 115 et seg.) as burrowing in the sand at 
low water and occurring near the eastern entrance of the straits, and 
between Cape Possession and Point Dungeness, but not farther west- 
ward than S. Jago and Philipp’s Bay. The soft parts of the animal 
are of a purplish color, more or less spotted. 
Donovan's original type is described as having only two plaits. 
It is quite obvious from the figures given by him that the specimen, 
after being more or less worn by the sea, had been “cleaned” and 
its color revived by a liberal use of acid, which has removed a good 
deal of the outer layer of the shell. In this way the feeble plaits 
behind the large anterior one may have been obliterated. 
ADELOMELON PARADOXA Lahille. 
Voluta paradoxa LAHILLE, Rey. Mus. de la Plata, vi, p. 29, pl. 1, fig. 68; 
pl. v, fig. 41; pl. vu, figs. 130, 147; pl. x11, figs. 17-21, 1895. 
Habitat.—Coast of del Sur, Argentina. 
