Mr. E,. E. Turner on Fcssorial Ili/menojitera. 81 



4. First abdominal segment ferruginous .... o. 



First abdominal segment black N. tasmanicus, Tura. 



5. Dorsal surface of the median segment 



much shorter in the middle than the 



scutellum 6, 



Dorsal surface of the median segment 

 about as long in the middle as the 

 scutellum N. gilherti, Turn, 



6. Prouotum ferruginous ; length 8 mm. . . N. mysticiis, Gerst. 

 Prouotum black ; length 4-5 mm N. spiniye)-, Turn. 



Ni/sson [Accmthostethus) nndiventrls, sp, ii. 



cJ . Niger; mandibulis, antennis, pedibus segmeutoque abdominali 

 prime fcrrugineis ; segmentis dorsalibus 1-5 fascia augusta 

 apicali utrinqiie flava ; alis hyalinis, leviter infuscatis ; segmento 

 dorsali septimo apice quinquedeiitato. 



5 . Mari similis, scgmentis 2-5 apice at lateribus fcrrugineis ; 

 segmento sexto dorsali serrate. 



Long., cJ 5-5, 5 6-5 mm. 



(^ . Head and thorax coarsely rugose, dorsal area of the 

 median segment coarsely longitudinally striated, abdomen 

 closely punctured. Apical joint of the flagellum scarcely 

 curved, longer than the penultimate. Abdominal segments 

 3-5 Avith an acute spine on each side at the apical angles ; 

 seventh dorsal segment with five apical sj^ines, the three 

 middle spines long and even, the outer spine on each side 

 much shorter. Second recurrent nervure interstitial with 

 the first transverse cubital nervure, second cubital cell 

 pointed on the radius. 



? . Dorsal surface of the median segment much shorter 

 than the scutellum, the basal area with about five longi- 

 tudinal carinae. Abdominal segments 3-5 with an acute 

 spine on each side at the apical angles ; sixth dorsal segment 

 rounded, the sides serrate, with tiiree teeth on each side. 

 Hind tibiae almost smooth. Second ventral segment not 

 angular at the base. Second cubital cell with a very short 

 petiole. 



Hab. Yallingup, S.W. Australia ; December. 



A pair taken on Leptospermum blossom. 



The male has no fringe of long hairs on the ventral 

 segments. 



Nysson (Acanthostethus) brishanensis, sp. n. 



§ . Nigra ; mandibulis, auteunis, pedibus, tegulis segmentisque 

 abdorainalibus primo sestoque ferrugineis, segmentis dorsalibus 

 1-5 fascia apicali contiuua tlava ; alis hyalinis ; segmento dorsali 

 sexto serrato. 

 Long. 6'5 mm. 



Ann. & Mag. N. Hist. Ser. 8. Vol. xv. 6 



