Tylenchorhynchus Sabourensis sp.n. and Quinisulcius Rotundicephalus sp.n. with a key to Quinisulcius species

Tylenchorhynchus sabourensis sp.n. is described and illustrated from the rhizosphere of black gram (Phaseolus mungo) from Sabour. It resembles I. impar Roy & Das, 1983 but can be seperated by its shorter stylet and longer tail with more number of tail annules. It differs with T. pruni Gupta & Uma, 1981 by the absence of longitudinal striations and longer tail. Quinisulcius rotundicephalus sp.n. collected from the rhizosphere of banana (Musa sp.) at Sabour is described and illustrated. It can be seperated from Q. acutus (Allen, 1955) Siddiqi, 1971 by having shorter stylet, (14.0–15.0 μm) longer tail (37 μm) less number of labial annules (3), distinctly set off esophageal bulb, and distinct conoid rounded cardia. It can also be diffrentiated from Q. capitatus (Allen, 1955) Siddiqi, 1971 in shape and number of tail annules and tail terminus. It possesses acutely pointed smooth terminus whereas Q. capitatus possesses bluntly pointed tail.