PACIFIC TUNICATA OF U.S. NATIONAL MUSEUM 169 



from Saganii Bay, Japan (in the latter, the stomach is comparatively 

 larger and with 14 longitudinal plications ; tentacles are fewer, 35-40 ; 

 the fourth branchial fold is represented by a fold), they agree with 

 each other so well in the general appearance of the zooid, especially in 

 the structure of the gonad containing a single testicular lobe. For this 

 reason, I prefer to treat the present specimen as a form affined to P. 

 {E.) monotestis^ although it is not impossible that the present specimen 

 might represent a local variety or form. 



83. Polycarpa aurata (Quoy & Gaimard) 



Figure 68 



Ascidia aurata Quoy & Gaimard, 1834, p. 559, pi. 3. 



Polycarpa aurata Sluiter, 1904, p. 57.— Herdman, 1906, p. 318, pi. 5, figs. 1-6.— 



Hartmeyer, 1919, p. 40. pi. 1, figs. 17-18.— Hastings, 1931, p. 74.— Tokioka, 



1955b, p. 53, fig. 3 ; pi. 6, figs. 17-20. 

 Pandocia aurata Van Name, 1918, p. 94, figs. 47-48; pi. 25, figs. 5-6. 

 Polycarpa sulcata Ilei-dman, 1882, p. 179, pi. 23, figs. 9-13. — von Drasclie, 1884, p. 



379, pi. 6, fig. 12 ; pi. 7, figs. 1,2,2a.— Traiistedt, 1885, p. 48. 

 Stycla psoloessa Sluiter, 1890, p. 3.37. 



Stycla (Polycarpa) pneumonodcs Sluiter, 1895, p. 179, pi 10, figs. 1-3. 

 Polycarpa aurata var. plana Herdman, 1899, p. 51, pi. Cyn. 20, figs. 1-5. 

 Polycarpa pcdunculata Pizon. 1908. p. 216, pi. 12, figs. 21-24. 



MATERIAL EXAMINED 



Caroline Islands : Ifaluk Atoll ; lagoon shore off middle of Ella Islet, 1^2 fath., 

 collected by diver Tawaitiu, October 21, 1953. F. M. Bayer, no. 714. One speci- 

 men attached to coral ( USNM 11748) . 



Description". — The individual examined is 89 mm. in length. Test 

 leathery, reaching about 3 mm. in thickness at some parts, very tough. 



Figure 68. — Polycarpa aurata (Quoy & Gaimard): Dorsal tubercle of the 89 mm. specimen. 



