14 INTHdDrCTION. 



Idittcrflii's tho D(ni(iiiii>, and in Africa the Aci'aimt, and in tin- 

 ^lalayan snlirc^inn tin- yt )titvf>i<i>iii . 



(.*i) 'Jhc .N\M>tr"|»i( 111 rr^'ion, uitlj iniK 1> the saino penoral cliarac- 

 tcristics as tlir tn>i)it:s of tin- (Md World, hut with very di^ti^cf 

 j;enera ; tlic innnense drvtlojinient ot" the St/ufohudtr and tho 

 I'yralid su])faniily C'/iri/s<ii'i/ii,<i l>ein;^ esix-eially marked, wliilwl tlio 

 Zilfjiimdii antl tlic I'yr.iliil suhtaniilirs I'liniluur and Kudi>trich'nui , 

 ijreally dcvrlojxd in the tropics (•! tlie Old ^\'^>rld, are almost 

 ahseiit. Amon^ l»wl t( illi<s \\\v Jlh<>,it'niun\ Htlicouinii\, liniMoiimf^ 

 Morjthlihi , Enicinulo , and IhsinDi'jtJt'unt are largely develoju'd, and 

 a very marked feature olfiir n-^rion. 



(4) Tlie Australian re^'ion eun>ist.s of (</)the temj)erute j»art of 

 Australia and Tasmania, with some aftiiiitirs to the extreme south 

 of Africa, eharactcri/ed by a jrn at (h-vilopment of the (Jeometrid 

 suhfamily Momtit* u'luvi , the Tim-id >uhfamilie.s (I''aij'hi>rintf and 

 .\if/(irifc/nn/ , and thr I/, ftin/iifit, it has also homr anc««strnl f«»nns of 

 J'ifralido : (A) Ntw /» aland, with athnitirs to Hawaii and the 

 extn-me south of Aimrir a, «hara< trri/ed hy tlir j;reat development 

 of the I'yralid sulM.imilics >V«>y»-o-oi//'/ and ('ramf>ino\, and the 

 Micru}>ttr)fiii(bi , ;ind an extren»e povrrty in other forms. The 

 fauna of the roj^ion nprcsents thr scattered remnants of a very 

 ancient and peculiar Southern fauuju 



TUK S< HKMi; OF TUI WoHK. 



Th(^ jilan of the work is to he^in with the mo>t highly Hpocialized 

 families, fjenera, and species, and j^ra<lually work down to the most 

 ;;:enerali/ed fi»rms ; the order <d tl-e families ;.nd pnera is that of 

 the Phylo^enetie lahle>, hei^innin;^' on the jxtnme left and working 

 ilown to the junction with another hraneh, then hejrinninj^ a^^ain at 

 its summit and workinjx d<»N\n to the same point, and so on, till the 

 most j^eneralized f(»rms at the hottom ot the tahle are reached, llio 

 arrangement of the specii s, howev«r, is that «»f the synoptic tables 

 of the s]»ecies, he;;inning with the more sj>ecializcd sections of 

 genera founded on structural charaeters. 



The references consist of one for each generic name, with its date 

 and the tyj)e on which it is foundid, whetlier it is retained as a 

 genus or treated as a subgenus or synonym. The references to the 

 species consist of tlie original refereiK e and one tor each synonym, 

 with their dates, references to the best figure of the sj)ecies and to 

 such faunistic works and Catalogues as are in most general use, and 

 references to the best descriptions and figures of the early stages, 

 which are jdaccd after the d«'Scription of the imago. 



Each genus and all the more imj)orlant >cctions of genera are 

 illustrated by jtroccss-ldocks in the text,. showing the facies of the 

 species and all its more imj)ortant structural characters, and all 

 species that have not been satisfactorily figured in other works will 

 appear in the coloured plates, which will be published separately in 

 parts containing no letterpress except the explanation of the plates, 

 a reference to the text of the volumes and the habitat of the 



