156 UNITED STATES NATIONAL MUSEUM BULLETIN 251 



Figure 61. — Botryllus composiius, new species: a, surface view of colony; b, surface of 

 irregularly lobated cormidium; c, prism-shaped cormidium; d, right side of a compara- 

 tively large zooid; e, ciliated groove. 



mentary testis consisting of several follicles in front of intestinal loop 

 on each side approximately at level of seventh transverse vessel. 



Remarks. — The appearance of the colony consisting of a number 

 of cormidia is unique for the present genus, hence it is given the spe- 

 cific name compositus. 



77. Botrylloides tyreum Herdnian 



Figure G2 



Botrylloides purpurcum Herdman, 1886, p. 41, pi. 1, figs. 1-3 ; pi. 2, figs. 1-11. Not 



von Drasche, 1883, p. 15. 

 Botrylloides tyreum Herdman, 1886, pp. 344, 381.— Gottschaldt, 1898, p. 642.— 



Sluiter, 1904, p. 101.— Van Name, 1918, p. Ill, fig. 07. 



