864 MESOZOIC INSECTS OF QUEENSLAND, vii., 



served, the whole of the clavus is present, showing complete 

 agreement with that of Mesoscytina, as far as the latter is pre- 

 served. We may therefore place Mesodiphthera also in the 

 Scytinopteridae. 



Mesodiphthera n.g. differs from the rest of the Scytinopteridae 

 so far mentioned, in that R branches into tw T o at about the 

 same level as the fork of M; whereas, in the other genera, R 

 remains unbranched until near the apex of the wing. This gives 

 us at once a connection with the Permian genus Permoscarta 

 Till., (9, p. 727) from the Newcastle Beds. Originally, I 

 placed this genus in the Cercopidae; but more mature study has 

 convinced me that this type is far too generalised to go definitely 

 into any existing family; and I now take the opportunity of 

 removing it to the Scytinopteridae, as constituted in this paper. 

 At the same time, we may reconsider the position of the genus 

 Permofidgor (9, p. 730) from the Belmont Beds. For this 

 genus, I made a new family Permofulgoridae. With the widen- 

 ing of the definition of the family Scytinopteridae, it is now evi- 

 dent that the Permofulgoridae are -mly a subfamily within that 

 family; and, as Handlirsch's generic name Scytinoptera is older 

 than my Permofulgor I now propose to sink the Permofulgoridae 

 definitely to the status of a subfamily P ermofulgorinac , within 

 the Scytinopteridae. 



It will thus be seen that all th« known Permian Homoptera 

 now go into the one family Scytinopteridae; and this affords 

 additional proof, if such were now needed, of the Upper Permian 

 age of the Upper Coal Measures of the Newcastle district. 



Four more genera still remain to be placed, amongst the Ips- 

 wich fossils dealt with in this paper. Of these, Chiliocycla is a 

 well defined genus, remarkable for the exceptionally strong and 

 sj:>ecialised tuberculation of the basal two-thirds of the wing. 

 Its venation, so far as preserved, is closely allied to that of both 

 Scytinoptera and Mesoscytina, and thus it may most certainly be 

 placed within the Scytinopteridae. Another genus, Triassoscarla, 

 n.g. shows distinct affinity with Permoscarta Till, from the 

 Newcastle Beds, and, through this genus, with Mesodiphthera; 

 this also can therefore be placed in the same family. The re- 

 maining two genera differ from all the rest in having three 

 branches to R, and thus have a venation which, though definitely 

 Scytinopterous in other respects, also resembles that of the 

 (i.riidae amongst the Fnlgoroidea. As, however, amongst the 



