New records of three styelid ascidians (Order: Stolidobranchia) to Indian waters from Andaman and Nicobar Islands

The present paper deals with three species of styelid ascidians such as Polycarpa papyra Kott, 1985 in which no endocarp found in the gut loop whereas, numerous small endocarps are present in the body wall, Polycarpa argentata (Sluiter, 1890) in which gonads arrangement is confined in the ventral half of the body with large flat topped endocarp enclosed in the gut loop and Symplegma rubra Monniot, 1972 characterized by a red ring encircled both the siphons, which are reported for the first time to Indian waters from Andaman and Nicobar Islands.