162 UNITED STATES NATIONAL AIUSEUM BULLETIN 251 



Remarks. — The structure of zooids in the present colony closely 

 resembles that of the typical form of Botrylloides violoMeus Oka. 

 However, from my own observation, the coloration found in these 

 specimens seems to be miique and rather constant. Moreover, the 

 anus is located more posterior in the present specimens than in the 

 typical form in which the anus opens at the level of the ninth to 

 sixth transverse vessel. Because of the existence of these character- 

 istics I prefer at present to treat these specimens as a subspecies of 

 B. violaceus. 



Family Styelidae 



80. Syniplegma viride Herdtnan 



Figure 65 



Symplefftna viride Herdman, 1886, p. 144, pi, 18, figs. 7-14. — Van Name, 1902, 

 p. 378, pi. 50, fig. 22.— Michaelsen, 1904, p. 23.— Van Name, 1921, p. 404, 

 fig. 75.— Van Name, 1930, p. 482, figs. 50-51.— Berrill, 1932, pp. 78, 86, 88, 

 figs. 5b, 5d, 5e.— Berrill, 1940, p. 272, figs. 1-5.— Van Name, 1945, p. 232, fig. 

 139, pi. IS, fig. 2.— Millar, 1953, p. 315, fig. 21.— Millar, 1955, p. 196, fig. 

 24.— Millar, 1956, p. 925. 



Diandrocurpa botryllopsis Van Name, 1902. p. 383, pi. 54, fig. 68; pi. 59, figs. 

 120-121 ; pi. 60, fig. 123.— Michaelsen, 1904, p. 43. 



Diandrocarpa brakenhielmi Michaelsen, 1904, p. 50. 



Diandrocarpa brakenhielmi var. ceylonica Herdman, 1906, p. 331, pi. 7, figs. 10-18. 



Symplegma viride brakenhielmi Van Name, 1921, p. 407, fig. 76. 



Symplegma viride f. brakcnhielnii Hartmeyer & Michaelsen, 1928, p. 358. 



MATERIAL EXAMINED 



China : Probably Amoy ; received October 12, 1932, from T. Y. Chen, University 

 of Amoy; sta. 5, no further data. One colony (USNM 11535). 



Thailand: Langsuen ; encrusting barnacles on a bamboo stake. H. M. Smith, 

 September 22, 1923. One colony (USNM 11762). 



Palau Islands : Ngemelis Island ; seaward reef flat. GVF sta. 61. One 

 colony (USNM 11390). 



Description. — A small colony from the Palau Islands, a single mas- 

 sive colony, 25 mm. long and 10 mm. X 5 mm. on section near the 

 middle, from Amoy and a comparatively large encrusting colony, 37 

 mm. X 21 mm. in extent and about 1 mm. in thickness, fi'om Thailand 

 were examined. The Palau specimen includes only two zooids, re- 

 spectively 2 mm. and 3 mm. in length. 



Test transparent, vessels, and many ampullae full of yellowish cor- 

 puscles seen distinctly through test. Up to 30 vessels mostly running 

 in dorsoventral direction and anastomosing with one another cover 

 periphery of zooid. Amoy specimen sparsely covered with mud ; test 

 transparent, gelatinous, somewhat horny to touch. Zooids about 2 

 mm. in length and yellowish brown. The Thai colony contains 2.5 

 mm.-4 mm. long zooids, test transparent. 



Zooids laid with left ventral side beneath. Brancliial aperture 

 subterminal, anterior margin of atrial aperture situated at middle of 



