Hymenoptera from Dutch Xeio Guinea. ill 



Odynerus, Latr. 



4. Odynerus {Lionotus) sp. 



1 ? , Miinika River; July 1910. 



This single specimen belongs to the subgenus Lionotus 

 and closi'ly resembles 0. conjluentus, Sra., in coloration. 

 There are structural difFerencts which make it impossible to 

 consider it as a variety, and it would thus be better to leave 

 the species unnamed tor the present. 



Subfamily Vesting, D. T. 

 ISCHNOGASTER, Gu(5rin. 



5. Ischnog aster fill yipennis, Guer. 



Ischnoguster fu/i/ipennis, Gner., Duperrev, Voy. ' Coquille,' Zool. vol. ii 

 pt. 2, p. 2&:), pi. ix. tig. 9 (1839). 



1 $ , :\Iimika River, Julv 1910; 1 c? , Wataikwa River, 

 August 1910. 



6. Ischnogastcr iridipennis, Smith. 



Ischnogaster iridipennis, Sm. Journ. Proc. Linn. Soc, Zool. iii. p. 166 

 no. 1 (1858). 



1 ? , Mimika River ; August 1910. 



Also recorded from Mysol and Aru {Wallace). 



ICARIA, Sauss. 



The species of Icaria do not seem to vary much in colour 

 or size, unlike Polistes, in which both of these characteis 

 vary extensively. All the five species here described as new 

 have the clypeus of the typical form for the genus, t. e. short, 

 broad, and produced to a point at the apex, so that it has not 

 been considered necessary to refer to it in the detailed 

 descriptions. 



The subgenera, adopted by Dalla Torre in the ' Genera 

 Insectorum,' Fam. Vespidse, have been used for the dis- 

 crimination of the new species. 



7. Icaria conservator^ Smith. 



Icaria conservator, Smith, Journ. Proc. Linn. Soc, Zool. iv. Suppl. 

 p. 130. no. 1 (1860) 



8 5 , from Mimika River; July and August 1910. 



The whole scries of this species in the Museum is from 



