During study of freshwater monogeneans of Meerut region, we came across five infected specimen of fish Mystus vittatus, infected with monogeneans belonging to the genus Cornudescoides Kulkarni 1969. On subsequent study, the worms appear new to us and are described here in as such. C. kulkarnii n. sp. is characterized by four pairs of head organs, nut cracker shaped accessory piece of cirrus, capitulum or patches with proximal conical protruberance, longer inner root of dorsal anchor and difference in shape and extension of dorsal bars. While C. susanii n. sp. is characterized by presence of seven pairs of head organs, caliper like accessory piece of cirrus, longer and inwardly curved lateral hooks, prominently protruded outer roots and larger inner roots of dorsal anchor.

Chemical named 5-bromo indoxyl acetate has been used to describe the nervous system of anoviparous Dactylogyridmonogenean PellucidhaptorPrice and Mizelle (1964), a gill parasite of Carassius auratus. Central nervous system consists of paired cerebral ganglia from which anterior and posterior neuronal pathways arise. These neuronal pathways are interlinked by cross connectives and commissures. Paired dorsal, ventral and lateral nerve cords emanate from the cerebral ganglia, connected at intervals by transverse connectives. Huge arrangement of dorsal, ventral and lateral nerve cords and their innervations have been examined. Peripheral nervous system (PNS) includes innervations of the alimentary tract, reproductive organs and attachment organs (anterior adhesive areas and haptor). Both the CNS and PNS are bilaterally symmetrical, and better developed ventrally than laterally and dorsally.

Chemical named 5-bromo indoxyl acetate has been used to describe the nervous system of a viviparous monogenean Cornudescoides Kulkarni (1969), a gill parasite of Mystus vittatus. Central nervous system consists of paired cerebral ganglia from which anterior and posterior neuronal pathways arise. These neuronal pathways are interlinked by cross connectives and commissures. Paired dorsal, ventral and lateral nerve cords emanate from the cerebral ganglia, connected at intervals by transverse connectives. Huge arrangement of dorsal, ventral and lateral nerve cords and their innervations have been examined. Peripheral nervous system (PNS) includes innervations of the alimentary tract, reproductive organs and attachment organs (anterior adhesive areas and haptor). Both the CNS and PNS are bilaterally symmetrical, and better developed ventrally than laterally and dorsally.