Ascidians collected during the 2013 Singapore Strait International Marine Biodiversity Workshop Author Lambert, Gretchen University of Washington Friday Harbor Laboratories, 620 University Road, Friday Harbor WA 98250, USA. Author Lee, Serina Siew-Chen 0000-0001-9326-0941 St John’s Island National Marine Laboratory, National University of Singapore, 18 Kent Ridge Road, Singapore 119227. & serina. lee @ nus. edu. sg; https: // orcid. org / 0000 - 0001 - 9326 - 0941 serina.lee@nus.edu.sg Author Teo, Serena Lay-Ming 0000-0002-3309-4715 St John’s Island National Marine Laboratory, National University of Singapore, 18 Kent Ridge Road, Singapore 119227. & tmsteolm @ nus. edu. sg; https: // orcid. org / 0000 - 0002 - 3309 - 4715 tmsteolm@nus.edu.sg text Zootaxa 2021 2021-02-18 4933 1 1 38 journal article 8063 10.11646/zootaxa.4933.1.1 8ebe62fc-b086-459e-b9fd-8a75ded875c7 1175-5326 4547842 56476487-ABC9-4C1C-A73F-D39E55DB9005 Polycarpa argentata ( Sluiter, 1890 ) #3799B, black warty tunic, heavily overgrown by Botrylloides sp. (#3799A), anemones, and barnacles; 5.5 cm long x 3.5 cm wide in tunic. V shaped dorsal tubercle. Single very large endocarp in gut curve. Anus with many short rounded lobes. Dark brown body wall with numerous small very dark gonads. #3827B, one large, 5 cm x 5 cm in tunic but longer than wide out of tunic. Widely distributed in the tropical west Pacific: Indonesia , Philippines , Singapore , Taiwan , Vietnam , Guam , Palau , Australia , Gilbert & Marshall Is., New Caledonia , Mozambique . References with detailed descriptions and illustrations: Tokioka (1950 , 1970 as P. iwayamae n.sp. ), Kott (1985) , Monniot C. (1987b, 2002), Monniot F. & Monniot C. (1996), Monniot F. (2010), Lee et al . (2013) . Other references: Monniot F. & Monniot C. (2001), Lambert (2003) , Kott (2008) , Lee et al . (2016) .