Sureshia trychopea sp. n. (Cestoda: Dilepididae) from white-throated swifts, Aeronautes s. saxatalis (Aves: Apodiformes) with notes on dilepidine cestodes having a vaginal sclerite. Proceedings of the Helminthological Society of Washington, 51(2) 1984: 305-308. 306 [Zoological Record Volume 121]