866 MESOZOIC INSECTS OF QUEENSLAND, vii., 



We may now proceed to the classification and description of 

 the Ipswich fossil Homoptera. For this purpose, I offer first of 

 all a list of the fossils, arranged in their families, and will then 

 take each family in turn, and give, keys to the subfamilies and 

 genera included in it. 



LIST OF THE FOSSIL HOMOPTERA FOUND AT IPSWICH. 

 Family SCYTIXOPTEEIDAE Handl. 



Genus Chiliocycla, n.g. (Genotype, Ch. scolopoides , n. sp.) 



1. Chiliocycla scolopoides, n. sp. (p. 869). 

 Genus Mesoscytina, n.g. (Genotype, M. australis, n. sp.) 



2. Mesoscytina australis, n. sp. (p. 871). 



3. Mesoscytina affinis, n. sp. (p. 872). 



Genus Mesodiphthera, n.g. (Genotype, M.grandis, n. sp.) 



4. Mesodiphthera grandis, n. sp. (p. 873). 

 Genus Triassoscarta, n.g. (Genotype, T. subcostalis, n. sp.) 



5. Triassoscarta subcostalis, n. sp. (p. 874). 

 Genus Mesocixius, n.g. (Genotype, M. triassicus, n. sp.) 



6. Mesocixius triassicus, n. sp. (p. 877). 



Genus Triassocixius, n.g. (Genotype, Tr. australicus, n. sp.) 



7. Triassocixius australicus, n. sp. (p. 878). 



Family IPSVICIIDAE, fam. nov. 



Genus Ipsvicia, n.g. (Genotype, I.jonesi, n. sp.) 



8. Ipsvicia jonesi ', n. sp. (p. 879). 



9. Ipsvicia maculata, n. sp. (p. 881). 



10. Ipsvicia acutipeiuiis, n. sp. (p. 883). 



Family JASSIDAE. 



Genus Eurymelidium, n.g. (Genotype, E. australe, n. sp. 



11. Eurymelidium australe, n. sp. (p. 885). 

 Genus Mesojassus, Till. (Genotype, M. ipsviciensis Till.) 



12. Mesojassus ipsviciensis Till. (p. 886). 



Genus Triassojassus, n.g. (Genotype, Tr. proavitus, n. sp.) 



13. Triassojassus proavitus, n. sp. (p. 888). 



Besides the above, there are five good impressions of Homop- 

 terous elavi, which I have decided to figure and describe, though 

 they cannot be named. 



There are also five other impressions of Homopterous tegmina 

 which are too fragmentary or indistinct to be either described or 

 figured. The total number of Homoptera so far found at Ips- 

 wich is therefore twenty-two specimens. 



