376 



MESOZOIC INSECTS OF QUEENSLAND, VI., 



Closely similar to S. reticulata, from which it differs as follows: 

 -Branchings of II, M, and Cu differently arranged, as may be 

 seen by comparing Text-figs. 34 and 35. (Not much stress can 

 be laid on this character, however, since not only different indi- 

 viduals of the same species of Cockroach, but also even the right 



Text-fig. 35. 



Samaroblatta triassica, n.g. et sp. ( x 7£). Left tegmen. Upper Trias of 



Ipswich, Q. Drawn from Specimen No. 156. 



and left tegmina of the same individual, show considerable differ- 

 ences in this respect). Cross-venation indicated upon the area 

 served by the branches of R, but not upon M, Cu, or the anal 

 area. Anal area with nine anal veins, all ending upon the pos- 

 terior border; the fourth, fifth, and sixth with small distal fork- 

 ings, which anastomose with one another; the other anal veins 

 simple. 



Type, Specimen No. 156. (Coll. Queensland Geological 

 Survey). 



Horizon: Upper Triassic, Ipswich, Q. 



Though the costal area is missing, the structure of R shows 

 that this species belongs to the genus Samaroblatta. 



Samaroblatta .ionesi, n.sp. (Text-fig. 36). 



A fairly well preserved fragment of a left tegmen, with the 

 costal border and apical area missing, most of the posterior 

 border and anal area complete. 



Greatest length, 11 mm., indicating a tegmen of total length 

 about 13 mm. Greatest breadth, 4 mm. 



Closely related to the above two species, but distinguished 

 from them as follows ; — No cross-venation anywhere indicated; 



