600 MK. R. E. TURNER ON 



5. PiSON (PiSONOIDES) ERYTHROCERUS Kohl. 



Parapison i'ujicornis Sm. Ti-ans. Ent. Soc. London, p. 300 

 (1869), 2 (nee Smith, 1856), 



Pison erijthrocerus Kohl, Verh. zool.-bot. Ges. Wien, xxxiv. 

 p. 186(1884), ?. 



Pison erythrocerum D. T. Oat. Hymen, viii. p. 711 (1897), 



The clypeus of the male is armed with three short acute teeth 

 on the middle of the apical margin. 



Hah. Mackay, Q. {Turner), February to May ; Kuranda, Q. 

 {Turner), May and June. 



6. Pison (Pisonoides) simulans Turn. 



Pison {Parapison) simulans Turn. Ann. & Mag. Nat. Hist. (8) 

 XV. p. 559 (1915), 6. 



This is very near erythrocerus, but in addition to colour- 

 differences the sculpture of the median segment is more strongly 

 developed, and there is only one tooth in the middle of the apical 

 margin of the clypeus. 



Hab. Eaglehawk Neck, S.E. Tasmania {Turner), March. 



7. Pison (Pisonoides) noctulum Turn. 



Pison {Parapison) itoctulum Turn. Proc. Zool. Soc. London, 

 p. 516 (1908), 5 . 



The cubital margin of the second cubital cell is twice as long 

 as the first transverse cubital nervure ; the nervures are fuscous, 

 the stigma ferruginous. The median segment is longer than in 

 caliglnosum, and there is a small triangular space at the base, 

 the apex of the triangle meeting the median carina. The pro- 

 notum is longer than in caliginosum or tenehrosum. 



Hah. Mackay, Q. {Turner), February; Kuranda, Q. (T^jtnter), 

 June. 



8. Pison (Pisonoides) caliginosum Turn. 



Pison {Parapison) caliginosum Turn. Proc. Zool. Soc. London, 

 p. 518 (1908), 2 • 



The cubital mai-gin of the second cubital cell is about half as 

 long again as the first transverse cubital nervure, the latter 

 curved, not straight as in noctichom ; nervures and stigma black ; 

 median segment without a triangular space at the base. 



Hah. Kuranda, Q. {Turner), February. 



9. Pison (Pisonoides) tenebrosum Turn. 



Pison (Parapison) tenehrosum Turn. Proc. Zool. Soc. London, 

 p. 518 (1908), $ . 



The second cubital cell is triangular, the cubital margin equal 

 in length to the first transverse cubital nervure. 



Hah. Mackay, Q. {Turner), January. 



