248 University of California Publications in Zoology. [Vol. 6 



included here only those specific names which undoubtedly belong 

 to this species based upon the criteria of Harmer ('98). Tbe 

 species of Tubulipora are in a sad state of confusion, and for 

 the purposes of this report, as well as in the interests of clearness, 

 it seems best to consider only that synonymy about which there 

 can be no doubt. 



The colony represented in fig. 25 is a youthful one possessing 

 only one adult ovicell (oe.) and two immature ones (im. oc). On 

 older colonies, ovicells are usually abundant as many as seven 

 being found on a single colony. The ocecia bulge very decidedly 

 and are usually two-lobed, the ooeciostomal tube arising on the 

 margin of the ocecium whose point of origin is in a radius of the 

 zoarium. 



This species is quite abundant cm kelp growing around Channel Rocks, 

 Puget Sound. Also obtained on shore kelp near San Pedro, California. 



93. Tubulipora pacifica sp. nov. 



PI. 22, figs. 27, 28. 



Zoarium adnate, forming well-developed fan-shaped or 

 almost circular colonies (pi. 22, fig. 28). Zoceeia radiating, sub- 

 erect, the distal half or two-thirds frequently quite erect, connate 

 in single or double rows, sometimes interlacing (fig. 27). Oacia 

 (oe.) large, lobed, extending between the connate series of 

 zooecia. Oceciostome (oest.) large, its tube bent and flattened, 

 and ending in a funnel-sbaped expansion which may be circu- 

 lar, i.e., may flare widely or be more or less compressed. 

 OoRciopore (oep.) when flaring, larger than the aperture of a 

 zocecium (/?. oep.) ; otherwise compressed and more or less slit- 

 like (com. in p. i. 



The general shape and appearance of a colony of this species 

 is not unlike that of T. fiabellaris, but close inspection reveals 

 many differences. The zooecia are more nearly vertical, and except 

 in very young stages of colonial growth are connate, sometimes in 

 single rows, frequently in double rows or in bundles of zooecia. 

 The tube of the ooeciostonir has a diameter about equal to that 

 of a zooecium. It seems to emerge from the side of a zocecium at 

 right angles to it, its distal extremity flaring suddenly, and 

 remaining so, or becoming more or less compressed. 



