756 PERMIAN AND TRIASSIC INSECTS FROM N.S.W. 



Specimens numbered 6, 15, 18, 19, 21, 22, and 35 are not 

 characterised, as far as I can see, by anything that would enable 

 them to be definitely determined as insect-remains. Nos. 6, 18, 

 19, and 35 are densely veined fragments, which appear to me to 

 be plant- rather than insect-remains. 



Note on a Silurian Fossil. — The specimen numbered 33, found 

 in Silurian rock, appears, at first sight, to be a passable beetle- 

 elytron. On closer examination, no trace of a true suture or 

 margin can be seen, and the longitudinal striae show a character- 

 istic, oblique cross-striation which does not occur in any insect 

 known to me. This fossil would appear to be a small portion of 

 a closely ribbed Brachiopod shell, very probably belonging to 

 the genus Fentamerus. 



Note. — Only a week or two after the completion of this paper, 

 I received from Mr. Herbert Bolton, M.Sc, Director of the 

 Bristol Museum, England, a copy of his paper on the "Mark 

 Stirrup" Collection of Fossil Insects from the Coal-Measures of 

 Commentry (Allier) France (Mem. Proc. Manchester Lit. Phil. 

 Soc, 1917, Vol.61, Pt.l). Amongst these Upper Carboniferous 

 Insects described in this excellent paper, there is one, Sycopteron 

 symmetrica^ n.g. et sp., which the author considers to be most 

 probably a Panorpid. After reading the description and study- 

 ing the figures, it is clear to me that this insect is more likely to 

 be an archaic type of Psocid; but it is not well enough preserved 

 for its affinities to be detei'inined with certainty. — K.J. T. 



