BV K. J. TILLYARD. 453 



TuiTiing now to the second new genus, we find a further 

 corroboration of the N'iews here set fortli. The beautiful new 

 genus St/nfhemiop.sis, from Cradle Mountain, combines in itself 

 the prin-jipal characters of the Australian tribe Synthf^mini and 

 tlie Chilian species Gomphoniacromia jxirado.va Br. With the 

 facies of the latter species, it possesses the typical i-eticulate 

 l)asilai- space of the SyiUhpinini; so that it would be ditficult, 

 fi-om a study of the imago alone, to decide as to which of the 

 two it was most closely i-elated. Realising this, 1 searched 

 assiduously for the larva, and was rewarded by finding two of 

 the exuviffi. These have the typical divciyfuf /cuu/s/ipafhs of 

 the Synfhemini, so that the closer relationship witli this Austra- 

 lian group may be taken as proved. In this case, the greater 

 divergence between the two extreme types, Synfhemix and Gom- 

 phomacromia, is clearly correlated with their greater distance 

 from the place of origin; for the Synthemini are spread far and 

 wide over xA.ustralia and Papua, while Gomphomacromia ranges 

 into P^cuador and Brazil I 



The following is a list of the species dealt with in this paper: — 



Suborder ANISOPTERA. 



Family ^SCHNID^. 



Subfamily .i:SCHNIX.i:. 



A R C H I P E T A L I A, n.g. (Type, A. anrinihifd, n.sp.). 



1. .4. auricuiafa, n.sp. 



T E L E p H L K B I A Help's. (Type, 7'. yockffroyl Selys). 



2. 7'. fryoni, n.sp. 



A u s T R o ^ s c H X A Selys. (Type, A. parvisfiyma Selys). 



3. A. hardyi, n.sp. 



Family LIBELLULID^. 



Su))family CORDULIIN.^i:. 



Synthemiopsi s,- n.g. (Type, S. gomphomacromldidf's, n.sp. ). 



i. S. gomiphomacrom io'ides, n . sp. 

 33 



