PACIFIC TUNICATA OF U.S. NATIONAL MUSEUM 



199 



Figure 87. — Pyura lepidoderma Tokioka: The 12 mm. specimen from Japan. 



104. Pyura curvigona Tokioka 



Figures 88, 89 



Pyura curvhjona Tokioka, 19.10, p. 147, fig. 22 ; pi. 10, ligs. 4—0. 



MATERIAL EXAMINED 



Palau Islands: Iwuyama Bay; south end of Guazima (Island XV). GVF 

 sta. 92. Two specimens (USNM 11409). — Iwayama Bay; south end of Island 

 XX. GVF sta. 134. One specimen (USNM 11405) attached to Turhlmria. 



Description. — Three specimens from the PaUxu Ishiiids were ex- 

 amined, 30 mm., 2() mm., and 5 mm. in lent^th; the hist witli a J) mm. 

 long extension of the test from the posterior end of the body (fior. 

 89a). Animals attached to .substratum by right or left ventral side 

 or by anterior right side of body. Branchial aperture subterminal, 

 atrial aperture situated near middle of body. Apertures nearly ses- 

 sile or opened on low elevations. Test leatliery, yellowish white, milky 

 white with reddish tint, or dark brownish on dorsal side, but pale 

 on the ventral half. Specimen from sta. 184 w^as yellowish green when 

 alive. Test thin, though slightly thicker on dorsal side, but very tough. 

 Inner side nearly of same color as outer surface, but somewhat ligliter 

 with white pearly glistening. Neighborhood of apertures corrugated 

 or formed into a number of suiall h)bes, carries a small amount of mud 



