80 Mr. R. E. Turner 07i Fossorial Hymenoplera. 



Seventh dorsal segment with three apical 

 spines 3. 



3. Ventral segments 2-4 with an apical fringe 



of long hairs 4. 



Ventral segments without a fringe of long 



hairs is. saussurei, Handl. 



4. Abdominal segments 3-6 with a spine on 



each side at the apical angles 5. 



Abdominal segments 3-6 without spines 



at the apical angles N, tiiysticus, Gerst. 



5. Dorsal surface of median segment much 



shorter than scutellum ; basal dorsal 



segment black N. moerens, Turn. 



Dorsal surface of median segment about 

 as long as scutellum ; basal dorsal seg- 

 ment ferruginous 6. 



6. Basal area of median segment coarsely 



longitudinally striated ; second recur- 

 rent nervure interstitial. Length 7 mm. N. confertus, Turn. 

 Basal area of median segment finely ob- 

 liquely striated ; second recurrent ner- 

 vure received before the first transverse 

 cubital nervure. Length 4-5 mm. . . N. minimus, Turn. 



7. Median segment with a blunt tubercle on 



each side of the truncation, below the 



Inrge spines of the apical angles N. punctatissiiims, Turn. 



Median segment without tubercles below 

 the spines of the apical angles 8. 



8. Segments 3-5 with a distinct spine on 



each side at the apical angles ; ventral 

 segments 2-5 with an apical fringe of 



long hairs N. ohliteratus. Turn. 



Segments 3-5 without spines 9. 



9. Ventral segments 2-5 with an apical fringe 



of long hairs N. gilberti, Turn. 



Ventral segments without a fiinge of long 



hairs 10. 



10. Basal abdominal segment red N. spiim/er, Turn. 



Basal abdominal segment black N. tasmanicus, Turn. 



$2. 



1. Sixth dorsal segment serrate at the sides, 



with three or four teeth ; segments 3-5 

 with acute spines on each side at the 



apical angles 2. 



Sixth dorsal segment not serrate ; seg- 

 ments 3-5 without spines 3. 



2. Enclosed area of median segment with 



about five longitudinal carinoe N. nudive^itris, Turn. 



Enclosed area of median segment without 



distinct stride or carinse N. brisbanensis, Turn. 



3. Median segment with a short blunt tu- 



bercle on each side of the truncation 



below the spines of tlie apical angles. . N. punctatissimus, Turn. 

 Mediiin segment without tubercles below 

 the spines of the apical angles 4. 



