174 
IDENTITY OF THE AUSTRALIAN PERIPATUS, 
quarto volume containing the paper bears the date 1870 on the 
title page, but 1871 on the paper cover. Leuckart's first mention 
of it was founded on a preliminary notice or abstract in the 
"Protocollen der Mosk. Naturforscherversamml." He says: 
"Verf. untersuchte zwei Arten, den P. capensis, Gr., und eine 
neue schon vor mehreren Jahren vom Kef. in diesen Berichten 
erwahnte neuhollandische Art, die vom Yerf. als P. Leuckarti 
bezeichnet wird."* Acting on the hint given in this passage I 
looked through the earlier volumes of the Archiv seriatim until I 
found the introductory notice, to which reference has been made. 
On the publication of the paper itself Leuckart added his oft- 
quoted second notice,! giving the brief resume of the characters 
of the species which has hitherto had to serve as the only avail- 
able guide to the contents thereof. Leuckart says : " Die neue 
Art, die aus Neu-Holland stammt, wird folgendermaassen 
beschrieben : Fiinfzehn Paar Fussstumel, von denen das letzte 
Paar die Geschlechtsoffnung zwischen sich nimmt. Auf der 
Unterseite der Fiisse drei Erhebungen, von denen die eine lang 
und bogenformig ist, wahrend die zwei andern kurz und gerade 
sind. Liinge 21 mm., grosste Breite 3*05 mm." 
This, it will be seen presently, is substantially a translation of 
the short summary which Sanger added at the end of his des. 
cription, and from the description itself it is evident that the 15 
pairs were intended to include the oral papillae, though beyond 
the exceptional use of the suggestive term " Fussstumel " instead 
of Leuckart's more usual expressions " Beinpaaren " or " Paar 
Beinen," no intimation of this is given in the summary or the 
translation. When the context is not left out of account the 
summary is quite satisfactory; wholly detached there from it is 
not free from ambiguity. When Peripatus was rediscovered in 
Australia, and all the specimens forthcoming for some time were 
found to possess 15 pairs of walking legs, a wrong interpretation 
was put on the expression "15 Paar Fussstumel " of Leuckart's 
Arch. f. N. xxxv. Jahrg. ii. Bd. 1869, p. 277. 
f l.c. xxxvii., ii. Bd., 1871, p. 407. 
