UPDATING THE TRACHELOCERCIDS (CILIOPHORA, KARYORELICTEA) .5. REDESCRIPTION OF KOVALEVAIA-SULCATA (KOVALEVA, 1966) GEN. N., COMB. N. AND TRACHELOCERCA-INCAUDATA KAHL, 1933

The morphology and infraciliature of Trachelonema sulcata Kovaleva, 19 66 and Trachelocerca incaudata Kahl, 1933, two trachelocercid karyorel ictids from the French Atlantic coast at Roscoff, were studied in live and protargol-impregnated specimens, as well as with the scanning ele ctron microscope. Voucher, respectively, neotype slides with protargol -impregnated specimens of each species have been deposited at the muse um of natural history in Lint (LI), Austria. The somatic and oral infr aciliature of T. sulcata and T. incaudata is very similar to that of o ther trachelocercids. However, the circumoral kinety of T. sulcata ext ends not only around the oral bulge but also along the brosse cleft, t hereby assuming a unique, key-hole-like shape. This character is used to define a new genus, Kovalevaia gen. n., to which two species are tr ansferred, viz. K. sulcata (Kovaleva, 1966) comb. n. (basionym: Trache lonema sulcata Kovaleva, 1966) and K. teissieri (Dragesco, 1960) comb. n. (basionym: Tracheloraphis teissieri Dragesco, 1960). Trachelocerca incaudata remains in the original genus because it lacks a brosse. Tr achelonema poljanskyi Raikov, 1963 is transferred to Tracheloraphis: T . poljanskyi (Raikov, 1963) comb. n. A tabulated key to the tracheloce rcid genera (Trachelocerca, Trachelolophos, Kovalevaia, Tracheloraphis , Prototrachelocerca) is provided.