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XI. Notes on the Longicornia of Australia and Tasmania. 
Part I., with a list of the species collected by Mr. J. 
J. Walker, B.N., F.L.S., and descriptions of new 
forms. By CHARLES je) Gagan, MAS; F-HS., of 
the British Museum (Nat. Hist.). 
[Read March 8th, 1893.| 
Tu1s paper was commenced with the intention that it 
should be little more than a list of species and descrip- 
tions of new forms. In the course of its preparation, 
however, I experienced difficulties, arising partly from 
errors of synonymy and of other kinds which I found 
in the Catalogue of Gemminger and Harold, but more 
especially due to the inadequacy of the descriptions 
of many of the older authors, the result of which has 
been to make my task much longer than I expected, and 
to give to the paper a character somewhat different to 
that at first intended. The frequency of the errors I 
met with compelled me to take little on trust, and must 
be my excuse for burdening the text with so many refer- 
ences to the descriptions of species. A few notes that I 
have added with regard to genera and species will, I 
trust, be found useful by other workers on this difficult 
eroup. 
The Longicorns collected by Mr. Walker in Australia 
and Tasmania reach a total of sixty-two species, and are 
those which are numbered in the text. Of these twelve 
are described as new, and one has been taken as the type 
of a new genus. A few other species, not included in 
Mr. Walker’s collection, are also described for the first 
time. 
PRIONIDA. 
Eurynassa stigmosa, Newm. 
Mallodon stigmosum, Newm., Ann. & Mag. Nat. Hist., 
vol. v., p. 15. 
A single specimen, from Children’s collection, now in 
the British Museum (and ticketed by Newman Mallodon 
TRANS. ENT. SOC. LOND, 1893.—PaRT I. (JUNE.) 
