PATELLA. 419 
The expression “ fornicato—muricatis” is peculiarly appro- 
priate for the ribs of this limpet, which, although varying greatly 
in shape, since, although habitually depressed, it sometimes 
displays a peculiarly elevated contour, invariably exhibits the 
characteristic vaulted spines. 
In his own copy of the ‘Systema’ our author has quoted 
plate 9, f. H of Gualtier, and plate 126, f. 8 of Petiver's ‘ Gazo- 
phylacium.’ Both these engravings communicate the general 
idea of the species; neither, however, I suspect, was actually 
designed for it: the former reminds one of the shape, but not 
of the spines; the latter (copied from Columna, Aquat.) of the 
spines, but not of the shape. 
Aatella gramuaris. 
The specimen (List. Hist. Conch. pl 536) inscribed with the 
numerals indicative of this shell in the Linnean collection 
belongs to the species which has been recognised for it, and 
thus designated by Lamarck and the modern conchologists. 
The cited painting of Regenfuss represents the shell; so, too, 
does figure 61 of Martini (Conch. Cab. 1.), which has been 
added to the synonymy in the revised ‘Systema,’ where “ List. 
536,” in lieu of the former reference “t. 3, f. 2,” shows that our 
author meant the second copper-plate of the third page of 
engravings, not the second figure upon the third copper-plate of 
the quoted chapter. His habitual carelessness is evidenced in 
his citation of Gualtier, whose drawing represents the next 
species; the G and the H of Argenyille, also, correctly quoted 
for granatina and granularis in the tenth edition, were erro- 
neously transposed in the final one. 
Patella granatina, 
The synonymy of this limpet, as it stood in the tenth edition 
of the ‘Systema,’ was perfectly correct; hence the universal 
recognition of the species as the Patella granatina of modern 
conchology. A specimen of it (Regenf. pl. 9, f. 31), with the 
