SUBGENUS ROTUNDUS NOV.

Diagnosis: Enchodelus . Body length 0.59- 1.80 mm. Lip region slightly or distinctly set off by a depression. Odontostyle small. Odontophore rod-like without basal flanges. Males with 7-10 ventromedian s:upplements, irregulary spaced beginning from anterior end of spicules. Tail in both sexes similar, hemispheroid or bluntly-conoid.

Type species: Enchodelus (Rotundus) parateres Baqri & Jairajpuri, 1974

Other species:

E. (R.) analatus (Ditlevsen, 1927) Thorne, 1939

E. (R.) laevis Thorne, 1939

E. (R) parvus Loof, 1971

E. (R) signyensis Loof, 1975 E. (R) teres Thorne, 1939

KEY TO SPECIES OF RO TUNDUS N. SUDO 1. Body length under 1.0 mm " parvus

.

Body length over 1.0 mm 2

2. Odontostyle one head-width long laevis

Odontostyle over one head-width long 3

3. Tail with saccate bodies 4

Tail without saccate bodies 5

4. Lips angular; slightly set off from body contour teres

Lips rounded; distinctly set off,from body contour signyensis

5. Lip region slightly set off from body contour; odontostyle 30-35 I'm long ... analatus

Lip region distinctly set off from body contour.; odontostyle 21-22 I'm long ... parateres