To understand the seasonal distribution and abundance of marine cyclopoid copepods of the mud bank at Purakkad - Thottappally region, Alleppey, regular plankton samples were collected from four fixed stations commencing from June, 1971 to June, 1972. Apart from this, 9 samples collected by R. V. VARUNA in the mud bank region was also studied for spatial distribution. A total of 32 species of cyclopoid copepods belonging to 5 genera and 4 families were encountered in the samples. Two peaks were observed for adults as well as copepodites during the period of investigation and this coincides with the rise in temperature and salinity.