Wj. 



Genus T;/'lcnchor]';;niclaii: Cobn, 191-3 

 (Key to the sp eci e s ) 



1. Cuticle marked by lonjjitudinal striae 2 



Cuticle not marked ry lontjitudinal striae • 7 



2. Lateral field marked by I4 lines 3 



Lateral field marked by 6 lines U 



3. Lip re£;ion bearing 3 or U annules c la^^on i Steiner, 1937 



Lip region bearing 6 or 7 annules 



lamelliferus (de Man I88O) Filipjev, 1936 



I4. Annules extending around terminus of tail 



tessellatus J. B. Goodey, 19^2 



Annules not extending around terminus of tail 5 



5« Less than 35 longitudinal striao at middle of body . .6 



About 60 longitudinal striae at middle of body 



quad r ifor Andrassy, \9Sh 



6. Lip region set off by c mstriction lenorus Brown, 1956 



Lip region continuous id.th body contour ornatus Allen, 1955 



7. Lateral field marked by i; lines 8 



Lateral field marked by 5 lines 2I4 



Lateral field marked by 6 lines 26 



8. Annules exterri.ing around terminus of tail 9 



Annules not extending around terminus of tail lU 



9. Lip region set off by constriction, 



dubis (Butschli, 1873) FUipiev, 1936 



Lip region continuous body contour. , 10 



10, Lip region bearing 6 or 7 annules; tail cylindrical, bluntly rounded . 



11 



Lip region bearing i; or 5 annules; tail tapering conoid ,.,,,., 



, eremicolus Allen, 1955 



11, Lip sclerotization heavy, conspicuous ,12 



Lip sclerotization faint, inconspicuous .,.,13 



12, Tail length about 1 anal body diameter; phasmids opposite anal opening 



brevicaudatus Hopper, 1959 



Tail length over 2 anal body diameter; phasmids at middle of tail • • 

 Jiagni Cauda (Thorne, 1935) Filipjev,1936. 



13, Tail less than 3 X anal body diameter parvus Allen, 1955 



Tail more than 3 X anal body diameter maxicais Allen, 1955 



