The present investigation deals with taxonomic studies of mammalian tapeworm of genus Avitellina, viz. A.caprain sp. collected from the host Capra hircus at Dhule (M.S.). The present worm differs from all other species of genus Avitellina in having scolex medium, quadrangular, suckers large, oval, neck long; mature segment 30-40 times broader than long; testes oval, medium, 8-12 in number, outer column 2-4, inner column 6-8 testes; cirrus pouch large, oval; vas deferens, medium; ovary medium, oval; vagina posterior to cirrus pouch and gravid segments with sac like par uterine organ, containing eggs.