44 



The most striking point about the collection from St. Peter's is 

 the occurrence of the gigantic Mesotitan, a form which certainly 

 links up the insect fauna of this locality with that of Commentry. 

 Although the Giant Age of Insects ceased in the Permian as far as the 

 Northern Hemisphere was concerned, yet at St. Peters we have 

 direct evidence that some at least of these forms lingered on far into- 

 the Mesozoic in Australia, existing side by side with far more highly 

 specialised Coleoptera, and closely allied to present-day forms. The 

 cockroach Notoblattites also may be classed as a representative of a 

 very archaic group of Blattoidea which attained their maximum 

 development in the Northern Hemisphere near the end of the 

 Palaeozoic Age. 



4. GOODNA FOSSIL INSECT. 



Order NEUROPTERA (PLANIPENNIA). 



Family OSMYLJD^E. 

 Genus EUPORISMITES, gen. nov. 



Closely allied to Porismus, but more especially to Euporismus. 

 A broad elegant fringe of close parallel veins borders the whole 

 wing. This is formed anteriorly by a large number of closely arranged 

 costal cross-veins, distally by the parallel branchings of the numerous 

 primary branches of the radial sector, and lower down by branches 

 from the media, both main branches of the cubitus, and probably 

 of the analis also. Subcosta and radius very close and parallel, 

 but distinct, and with at least two short cross-veins still visible 

 between thorn. Origin of radial sector missing, but evidently placed 

 well basad ; at least ten branches pass from below this sector, and 

 are separated by somewhat regularly arranged single rows of straight 

 cross-veins. Most of the media, cubitus, and all the analis missing.. 



TYPE : Euporismites Balli, sp. nov. 



EUPORISMITES BALLI, sp. nov. 

 Plate 3, fig. 1. 



This specimen was found by Mr. L. C. Ball, some miles to the 

 south of Goodna, in Tertiary beds resting unconformably upon the 

 Ipswich and Bundamba Series. The wing is clearly visible, and 

 oiisily studied, owing to its dark colouration. 



Two recent Australian Osmylids are without doubt very closely 

 related to this fossil viz., Porismus strigaluts, Burm, and Euporismus 

 albatrox, mihi (MS.).* The former inhabits dry or moderately dry 



* The description oi this insect will shortly be published. 



