76 BULLETIN" 100, UNITED STATES NATIONAL MUSEUM. 



has a central elongated ovary bordered by the numerous small simple 

 testes. 



The type and only specimen (No. 118) (Cat. No. 603F, U.S.N.M.) 

 was taken at station D51G6, (near Observation Island, Sulu Archi- 

 pelago. 97 fathoms, coral sand, February 24, 1908). 



PYURA PALLIDA (Heller), 1878. 



Plate 32, figs. 36-38. 



1878. Cynthia pallida Heller, Sitz.-Ber. Akad. Wiss. Wien, vol. 77, p. 96, pi. 



3, figs. 17-18. 

 1SS1. Cynthia pallida Heedman, Proc. Roy. Soc. Edinburgh, vol. 11, p. 60. 



1852. Cynthia pallida Hekdman, Rep. Voy. Challenger, vol. 6, Tunicata, 



p. 143, pi. 17, figs. 17-21. 



1853. Cynthia pallida Traustedt, Vidensk. Meddel. Natur. For. Kjobenhavn, 



arm. 1881, p. 119. 

 18S5. Cynthia pallida, var. billitonensis Sluiter, Natuurk. Tijdschr. Neder. 



Ind., vol. 45, p. 183, pi. 1, fig. 6; pi. 2, figs. 1-11. 

 18S5. Cynthia pallida Traustedt, Vidensk. Meddel. Natur. For. Kjobenhavn, 



aim. 1884, p. 35. 

 1886. Cynthia pallida+C. pallida, var. billitonensis Herdman, Rep. Voy. 



Challenger, vol. 14, Tunicata, App. A, p. 405. 

 1S90. Cynthia pallida, var. billitonensis Sluiter, Natuur. Tijdschr. Neder. 



Ind., vol. 50, p. 331. 

 1891. Rhabdocynthia pallida+R. pallida, var. billitonensis Herdman, Journ. 



Linn. Soc. London, Zool., vol. 23, p. 575. 

 1S97. Rhabdocynthia pallida Sluiter, Zool. Jahrbiicher, Syst., vol. 11, p. 7. 



1904. Rhabdocynthia pallida Sluiter, Siboga-Exped., vol. 56a, p. 54. 



1905. Halocynthia pallida Hartmeyer, Zool. Jahrbiicher, Syst., suppl. vol. 



8, p. 3S4. 

 1905. Rhabdocynthia pallida Sluiter, Bull. Mus. Nat. Hist. Paris, 1905, 



p. 102. 

 1905. Halocynthia pallida Michaelsen, Zool. Jahrbiicher, Syst., suppl. vol. 



8, p. 83. 



1905. Rhabdocynthia pallida Sluiter, Mem. Soc. Zool. France, vol. 18, p. 14. 



1906. Rhabdocynthia pallida Herdman, Ceylon Pearl Oyster Fisheries, Sup- 



plementary Report, No. 39, p. 308, pi. 2, figs. 36-39. 

 1906. Halocynthia pallida Hartmeyer, Zool. Anzeiger, vol. 31, p. 4, text- 

 fig. 2. 



1908. Pyura pallida (form typica) Michaelsen, Mitth. Mus. Hamburg, 



vol. 25, p. 270. 



1909. Pyura pallida (form typica) Hartmeyer, Bronn's Tier-reich, vol. 3, 



suppl., p. 1340. 

 1912. (Pyura) pallida Hartmeyer, Denkschr. Akad. Wiss. Wien, vol. 88, 

 math.-nat. Kl., p. 17. 



1912. Pyura pallida Hartmeyer, Deutsche Tiefsee-Exped., vol. 16, pp. 361, 



363. 



1913. Pyura pallida Hartmeyer, Zool. u. anthr. Ergeb. Forsch. Siidafrica, 



vol. 5, p. 128. 



Body as seen from one side generally irregularly rounded or quad- 

 rate and more or less compressed laterally; the attachment by a 

 rather small area on the ventral surface or more or less on one side. 



