iJiC 



60. Flavate bodies surrounding base of spear 



.... flavomaculatus Linst., I876 (a) 



Flavate bodies absent 61 



61. Length about 2.0 mm. or less incae Steiner, 1920 (a) 



Length about 3.0 mm. or more. fecundus Cobb, 191U (a) 



62. Female tails conoid-cylindroid or slightly clavate. 63 



Female tails spicate 65 



63. Length 1.2 mm.; female tail slightly clavate 



clavicaudatus Th. fe Swang,, 1936 (s) 



Length 2.$ mm. or over; female tail conoid-cylindroid 6k 



61|. Lip region continuous with neck contour . . aquatilis Skwarra, 1921 (a) 

 Lip region distinctly set off halophilus Daday, 1897 (a) 



65. Length over 3.5 nm zograffi de Man, 1885 (s) 



Length about 2.0 mm. or less 66 



66. Female tails uniformly convex-conoid, then spicate 6? 



Female tails dorsally convex-conoid, then spicate 68 



67. Lips set off by a slight depression .... biroi Daday, 1899 (a or s) 

 Lips continuous with neck contour . . . . doryuris Ditl., 1911 (s or a) 



68. Lip region set off by a constriction africanus Daday, I908 (s) 



Lip region not set off by a constriction 69 



69. Supplements contiguous; female tails longer tnan three times the anal 



body diameter bastiani Butschli, 1873 (s) 



Supplements not contiguous; female tails less than three-times the 

 anal body diameter 70 



70. Lips distinct, set off by a depression 



subulatus Th. & Swang., 1936 (s) 



Lips almost continuous with neck contour, . mesonyctius Kreis, 1930 (s) 



71. Males with submedian papillae; guiding ring double though usually 

 collapsed until appearing single (tails subdigitate, conoid to 



hemispherical) 72 



Males without submedian papillae; guiding ring single (tails conoid- 

 arcuate to hemispherical) 81 



72. Length 5. 0-r'7,0 mm 73 



Length under k»0 mm 7i; 



73. Esophagus about 20,0^ of body length. , robustus de Man, I876 (s or a) 

 Esophagus about 13.0^ of body length bathyblus Daday, 1906 (a) 



7h' Lip region broadly expanded corrii Liebermann, 1928 (a) 



Lip region not broadly expanded 75 



