^^2. 



8. Body ver) thin (a = hO - 60). , v 9 



Body not so thin ( a = 38 highest) 10 



9. Body vei'y larj^e (l,3'-1.7 v,iiii,)j spear lon^i; tail of norwal len^^th 



(c =9-10.3) ^rc-iciloides liicolet'/ky, 192^ 



Body riuc; smaller (O.I:-0.66 iiua.); sjoe'u shorter; tail very attenuated 

 (c = 2.7-I1.O) IS^^PPPF?. <^e i'ian, 1880 



10, Bursa ru''.iiiaentary or inc'istinjnishablc ,. 1 



Bursa normally developed (only few.iles kncm for dirolexus and orbus). 



. . . . . . TTTl} 



11. Larj;er species (O.Y mra. )j cuticle well snnulated. 



Micolet2,kyi Andrassy, 195U 



Smaller species (up to O.Iil mm.); cuticle very finely annulated . . 12 



12, Bursa rudimentary but apparent; tiubernaculum present; tail markedly 



attenuated, filiform dis cr eprrs Ajidrassy, 195h 



Bursa and ^ubernaciilum .ndistinijuishable; tail shorter, not so thin . 

 aberrans Altherr 



13. Tail ventrally hooked, not j inely acuiainate, terminus hooked. . . . lU 

 Tail mostly strongly attenuated, finel;>- acuminate, not ventrally hook- 

 ed 16 



lij. Tail almost cylindi'ical, gradually tapcrin^, alae v;ith 3 inner ricJ^es 



intactus hirjanova, 15^1 



Tail slimmer, more thin, alr'c with 2 inner ridges 15 



13. Vulva at mid-body (i,8,J-50,J)5 spear 10-llu long 



kirjanovae (Kirjanova, 1951) Andrassy, 195^4 



Vulva in latter third of body (6^-70/^); spear 15.8-17.6 u long. , . , 

 .• davainii Bastian, l865 



16. Annules very striking; smaller species (up to 0.6 mm.) 17 



Annules finer, not so distinct; larger species (over 0,7 mm.) , . . I8 



17. Wall of ttie vagina greatly thickened; posterior uterine-sac missing; 

 spear roundly knobbed; annule vddth 1.7 u . , . . agricola de Man, I88I4 

 Wall of vagina without unusual thickening; posterior uterine sac pre- 

 sent; spear longitudinal knobbed; annule width 0.9-1.2 u 



bryophilus Steiner, I91U 



18. Tail very thin, filiform (c = I4); metacorpus powerful and round . . . 



thornei Andrassy, 195U 



Tail shorter, not so attenuated (c = 6-12); metacorpus oval . , . , 19 



19. Esophagus very thin, metacorpus very weak; spear well knobbed; body 



analler (6.72-0.79 orbus Andrassy, 19i)U 



Esophagus bigger, metacorpus well developed; spear more weakly knobbed 



body larger (0,9-1.1 mm,),' 



dupieyus (Hagem'eyer & Allen, 1952) Andrassy, 195U 



