24 



OBS. : The co-type agrees very closely with the type specimen, 

 hut shows that the elytra vary in length up to 9.6 mm. Specs. 

 5la and 516 have a marginal ridge which is probably a distortion. 

 They also show the granulations on the marginal and sutural border. 

 Spec. 49 shows a very minute cellular structure where the elytron 

 has been broken, this being, probably, a portion of the remains of 

 a plant common in the shale matrix, and not belonging to the 

 individual. 



Family CURCTJLIONID^E . 

 ETHERIDGEA AUSTRALTS, Handlirsch. 



Plate 5, fig. 5. 

 Etheridgea australis, Handlirscli. Die Fossilen Insekten, Leipzig, 1908. 



tGlochinorrhynchus ? Etheridge and Olliff, Mem. Gaol. Surv. N.S.W. Palsejn- 



tology, No. 7, Sydney, 1890. 



ELYTRON, 3.6 mm. long, 1.4 mm. wide. Sculpture no ridge 

 present, but there are thirteen rows of minute tubercles which vary 

 much in size and prominence and in their distance from one another. 



TYPE : Spec. S4 (Plate 5, fig. 5). (Simmonds Coll.) 



OBS. : The ridge shown, in the drawing of the type by Eth. 

 and Olliff* is probably a post-mortem distortion. Other subordinate 

 irregularities to be observed in the type specimen, but not shown 

 in the figure, are probably due to the same cause. The illustra- 

 tion is also reversed, the type specimen being the right and not 

 the left elytron, the correct position being shown in the present 

 reproduction. 



Order ODONATA. 



Sub-Order ? Anisoptera. 



Sub-Family MESOPHLEBIIN.JE. 



Genus MESOPHLEBIA, gen. nov. 



Nodus well developed, but continued straight downwards beyond 

 '.Sc, instead of being bent outwards in the direction assumed by the 

 nodi of all recent Odonata, and stopping short at the radius. No sub- 

 nodus present. Subcosta terminating at nodus . Pterostigma present, 

 well formed, an elongate parallelogram with the lower side (formed 

 by the radius) convexly thickened ; a weak brace-vein present (Be). 

 Ml arching up to run close under pterostigma. Postnodal sector 

 {Mia) present, well formed. M 2 leaving M as distad from nodus as 



* Loc. cit., Plate 2. fig. 4. 



