^Ir. It. E. TuiMci- 0)1 Ics.forial lljjmenoplera. 8L 



4. First abloinhml 90j;:mi'nt fiTru^inous .... 5. 



I'iist nbclomiiiiil segm''ut black N. tasmanicus, Turn. 



•"3. Dorsftl surf.ice of the nifdian scnrment 

 niiK-li shorter ia the uiidtlle than the 



SCUtelhltH (». 



Dorsal surface of the luedinn st-jriueiit 

 about as long in the middle as the 



scuti'Iluu) N. gilberti, Turn. 



(>. rrouoluiu ferruginous ; lenpth H mm. .. 2\\ tni/s(icus, Gerst. 

 I'ronotuiu bhick ; length 4-5 mm ^V. spiniijer, Turn. 



Kijsson [Acanthostethus) nudiventris, sp. n, 



5. Niger; mandibulis, antennis, pedibus segmento(|ue abdominali 

 primo ferrugineis ; segraentis dorsaliijus 1-5 fascia augusta 

 apicali utrintiuo tlava ; alis hyalinis, levitcr iufuscatia ; segmeiito 

 dorsali scptinio aj)ice quinquedentato. 



$ . Mari similis, segmentis 2-5 apice et lateribus fcrrugineis ; 



segmeuto sexto dorsali serrato. 

 Long., cf o*5, 2 6-5 mm. 



,$ . Head and thorax coarsely rugose, dorsal area of the 

 median segment coarsely longitudinally striated, abdomen 

 closely punctured. Apical joint of the flagellnm scarcely 

 curved, longer than the penultimate. Abdominal segments 

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

 seventh dorsal segment with live apical spines, the three 

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

 much shorter. Second recurrent uervure interstitial with 

 the first transverse cubital uervure, 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 carinie. Abdominal segments 3-5 >vith an acute 

 sjjine on each side at the apical angles; sixth dcjrsal segment 

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

 Hind tibiio almost smooth. Second ventral segment not 

 angular at the base. Second cubital cell w ith a very short 

 petiole. 



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



A pair taken on Leptospcrinum blossom. 



The male has no fringe of long luurs on the ventral 

 segments. 



Nysson [Acanthostethus] brishanensis, sp. u. 



$ . Nigra ; mandibulis, anteunis, pedibus, tcgulis segmentisquo 

 abdominalibus primo scxtotiue ferrugiiieis, sognientia dorsalibus 

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

 sexto serrato. 

 LoQg. 65 mm. 



Ann. tt- Mag. N. Hist. Ser. S. Vol. xv. G 



