PATELLA. AQ7 
rays) for this species in the Linnean collection, and alone of 
the shells there present agrees with its description in the 
‘Systema.’ In a copy of the latter which belonged to the 
younger Linné, plate 547, f. 27 of Lister’s ‘ Historie’ has been 
accurately cited as illustrative. 
Patella testudimarvia, 
An example (Knorr, Dél. Yeux, pt. 1, pl. 21, f.1, but smaller) 
of the Patella testudinaria of authors is accompanied, in the 
cabinet of Linneus, by a paper inscribed “ List. 531,” which may 
be regarded as almost equivalent to the indicative numerals of 
the species, since the engraving thus referred to was one of those 
correctly quoted, as illustrative, in the published synonymy. 
That limpet, moreover, which has long been recognised for it, 
through the cited engravings and the enlarged description in 
the ‘Museum Ulrice,’ is the only one in the collection that 
aptly corresponds with the definition. 
The modern style of reference to Lister (“531”) has been 
adopted in the revised copy of the ‘Systema Nature.’ 
Patella compressa. 
The shell (List. Hist. Conch. pl. 541, f. 25) marked for this 
limpet in the Linnean collection is the one which has been 
similarly designated by modern conchologists. Although no 
illustrative drawing facilitated the identification, the peculiar 
pinched-up shape of the Patella attracted notice, and caused 
its early and universal recognition. ‘The reference to Lister 
attached to the succeeding species was, I suspect, a typo- 
graphical error, since the engraving there cited proves a by-no- 
means inaccurate delineation of the present shell. 
Aatella rustica. 
The Patella thus marked in the Linnean collection is the 
punctata of Lamarck (Payraudeau, Moll. Corse, pl. 3, f. 6, 7, 8, 
