314 SPECIES OF THE SYSTEMA. 
the second and third, and more linear and almost comma- 
shaped on the fourth and fifth (which two last are merely 
separated by a single stria), where certain of them, arranged at 
reocular but short intervals, being larger and more raised than 
the rest, seem to plicate the base of each turn; intervals be- 
tween these rows narrower than the elevations, and roughened 
by linear continuations, as it were, of them. Base plano-con- 
cave, Sharply angulated at the edges, whitish, with narrow 
radiating dull reddish wavy streaks, which, in crossing the 
narrow spiral lyrz seem to articulate them. These last are not 
so broad as their intervals, not much raised, very numerous, 
and rather ecrenated than beaded: Aperture nacreous, much 
compressed horizontally ; throat with raised spiral lines; pillar 
with five or six teeth. A false umbilicus. 
Trochus perspectibus, 
There can be little doubt that Linneus would have regarded 
all the larger Solaria as mere varieties of the same shell, and 
had the ‘Systema’ been his only publication, it would have 
proved impossible to determine for which of the many allied 
congeners the name should be retained. The limitation effected 
by the ‘Museum Ulrice’ enables one to particularise the species 
which displays the best claim to be regarded as the typical per- 
spectiwwus, and this assuredly is not the Solarwwm to which the 
name has been attributed by Lamarck (“ cingulis albo et fusco, 
aut castaneo, articulatis prope suturas”’) and Kiener, but the 
Solar. formosum of Hinds (Proc. Zool. Soe. 1844.—Chemn. 
Conch. Cab. vol. v. pl. 172, f. 1693.—Gevens, Conch. pl. 25, 
f. 267, 268.—Seba, Mus. vol. iii. pl. 40, f. 18, 14, 28), which 
corresponds exactly to the stated colouring, “ picti supra linea 
fusca albze superinducta.”’ Specimens of this very peculiarly 
banded shell are still preserved in the Linnean cabinet. Lister, 
plate 666, which seems a tolerable representation of formosum, 
and was apparently copied from the cited figures of Bonanni, 
has been referred to by Linneus, in his own copy, in lieu of his 
previous erroneous reference to that author. 
So thorough a revision is required of the synonymy of all the 
