Nothrus 



89 



11 < 



| Abd. shield-shaped, pointed posteriorly — 5. 

 ) Abd. not pointed posteriorly - 6. 



\ Cuticle finely reticulated — L. 360 u 



;> ) Cuticle smooth. — L. 600 ,u 



| Psstg. org. filiform 7. 

 1 | Psstg. org. clavate 10. 



| Abd. truncated posteriorly — 8. 

 ' \ Abd. rounded posteriorly — 9. 



Hairs on Dors, of Abd. setiform; the pair on 

 post, corners 4 times as long as the others 



on post, margin. — L. 1,1 mm 



° | Hairs on Dors, of Abd. spatulate or rod-like ; the 

 pair on post, corners not twice as long as the 

 I others on post, margin. - L. 800 u . . . . 

 I Dors, of Abd. convex; hairs thereon clavate . . 

 9 Dors, of Abd. concave, hairs thereon setiform. — 



I L. 700 n 



, Spines on lat. margin of Abd. as long as width 

 of Abd. and arising from apophyses which 

 10 ' project beyond the margin — 11. 



(Spines (or hairs) on lat. margin of Abd. short; 

 no projecting apophyses 12. 

 Apophyses long: Abd. oblong, truncated and 

 slightly concave posteriorly, the 2 apophyses at 

 postero-lateral corner of Abd. with bulbous 



proximal parts. — L. 900 u 



Apophyses short ; sides of Abd. somewhat curved, 

 it is narrowed and deeply bifid posteriorly, 

 apophyses at postero-lateral corners without 



bulbous bases 



Im. carrying the cast skin of post, margin and 

 of 2 long conical projections at post, angles 

 of Abd. of Nph., these enclose the same part 

 in Im. as in a bag. — - L. 0,8 — 1.2 mm . . . 

 Im. not carrying any cast skin. — 13. 

 Post, margin deeply incised (cmarginate) — 14. 

 Post, margin truncated or slightly concave or 

 convex — 15. 



Incision comencing near lat. margin, causing post, 

 margin to be bifid ; Dors, of Abd. flat without 

 raised margin: 6 clavate hairs on post, margin. 



— L. 700 n 



14 I Incision only central; Dors, of Abd. with strongly 

 raised margin; 4 pectinated hairs with refiexed 

 distal ends on post, margin; central pair 

 transverse and nearly as long as Abd. — 

 L. 700 fi 



| Post, margin with a broad central projection 

 1") ; lower in level than the Dors, of Abd. — 16. 

 I Post, margin without any central projection — 17. 



/ Central projection with small tubercles at corners 

 each bearing a large thick hair. — L. 800 ii 

 { Central projection with very large, almost 

 | cylindrical tubercles at corners, each bearing 

 I a very small sharply curved hair. — L. 1 mm 



18. N. tardus 

 9. N. glabei- 



p. 74 

 p. 71 



13. N. palustris 



1. N. anauniensis . . p. 70 

 4. N. biciliatus . . . p. 70 



2. N. banksi .... p. 70 



16. N. spinifer .... p. 73 



6. N. eehinatus ... p. 71 



12 



13 



l."j. N. segnis 



p. 73 



7. N". excisus . . . . p. 71 



8. N. flagellatus 



10. N. horridus 



p. 71 



P. 71 



">. N. biverrucatus . p. 71 



