Burt 1938. New avian cestodes of the family Dilepididae from Collocalia unicolor unicolor (Jerd.), the Indian edible-nest swiftlet, with descriptions of Pseudangularia thompsoni, P, triplacantha gen. et spp. nov. and Notopentorchis collocaliae gen. et sp. nov. Spolia Zeylan. Colombo, 21B 1938: pp. 1-14