726 PERMIAN AND TRIASSIC INSECTS FROM N.S.W., 



insects occur within the first 1,000 feet in vertical depth below 

 the bottom of tli^ Triassic, out of a total of 17,000 feet for the 

 whole of the Permo-Carboniferous strata, it will be seen that 

 one might even be justified in describing them as Upper Permian. 



Geologists recognise the dividing line between the Permian 

 and Lower Triassic strata to be the disappearance of Glossuplpris^ 

 and the advent of the various species of ThiiivfeMia and Tcuni- 

 o'ptevis. The Belmont insects are found associated with various 

 species of GlossojHeris, and with the interesting bivalved Crus- 

 tacean, Leaia mitchelli Eth., belonging to a genus of which the 

 type-species is found in the Permo-Carboniferous of the United 

 States. The Newcastle Insects, Nos. 23 and 32, were found 

 associated with Glossopteris lineai'is McCoy, G. hrowniana 

 Brongn., and many other species of this genus, together with 

 Sphenopleris gerinanus McCoy, and with Phyllotheca. 



The important point to bear in mind, for students of Palaio- 

 entomology, is that these insects are undoubtedly Palaeozoic; and, 

 as such, they exhibit a fauna which promises to be, when more 

 fully explored, quite unlike anything at present known from 

 Pakeozoic strata. 



Descriptions of the Specimens. 



i. Insect from the top of the Dirty Seam, Newcastle. 



Order HEMIPTERA. 



Suborder Horaoptera.. 



Family CERCOPID^. 



Subfamily CERCOPIN.^. 



Geiius Permoscarta, n.g. (Text-fig.2). 



Fairlv small insects (tegmen about 6 mm.), with strongly built 



tef'mina, finely tuberculate all over; the claval area of the 



usual Cercopid form, bounded anteriorly by the straight and 



stronglv-formed vein lA, and traversed near the middle b}- the 



subparallel and slightly wavy 2A : anal angle of the clavus not very 



sharply formed; the tuberculation extends all over the claval 



area. The tuberculation of the rest of the wing (corium) is 



slightly more definite in the basal than in the distal half, the 



