158 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 14 



Bugula pugeti Robertson, 1905 

 Plate 23, figs. 7 and 8 



Bugula pugeti Robertson, 1905 :271. 



Bugula Habellata, Robertson, 1900:321. 



Bugula pugeti, O'Donoghue, 1923 :21 ; 1925 :100 ; 1926 :45. 



This multiserial species belongs to the genus Bugula for the same 

 reasons given under B. flabellata. It differs from flabellata in a number 

 of ways, the distal zooecial end is rounded instead of truncate, the spines 

 are fewer, shorter and pointed, and the avicularia are somewhat longer, 

 stouter, all of one size, and all on the outer zooecia. The most striking 

 difference is in the entire absence of ovicells. As Miss Robertson pointed 

 out, there is a small rounded knob at the middle of the distal end of most 

 of the zooecia, but as this is lacking on the first few proximal rows of each 

 branch it leads to the suggestion that it is the merest vestige of an ovicell. 



Robertson recorded the species from Sitka, Alaska, to Puget Sound, 

 and O'Donoghue lists it for numerous localities in British Columbia 

 waters, low tide to 15 fms. 



It did not appear in the Hancock dredgings, but there are specimens 

 in the collection from Departure Bay and Five Fingers, British Co- 

 lumbia; Tomales Bay, California (R. J. Menzies), and also from San 

 Francisco Bay, California, Albatross Station D 5770, which is the south- 

 ernmost record. 



Bugula mollis Harmer, 1926 

 Plates 22, fig. 3, and 23, fig. 6 



Bugula mollis Harmer, 1926:445. 



Bugula mollis, Hastings, 1930:704. 



The zoarium is bushy (40 mm high in one specimen), with loosely 

 turbinate branches, delicate and flaccid ; the branches definitely jointed 

 at the base. The zooecia are biserial, moderately large ; the opesia reaches 

 nearly to the proximal end, inclined toward the zoarial axis. Harmer 

 (pi. 31, fig. 10) shows the species with three long distal spines, jointed 

 at the base, but in our material these are represented by short pointed 

 processes. The avicularia are situated on the outer rim half way or more 

 above the base. 



The ooecium is incomplete, lacking the front wall, but is circular in 

 outline and projects forward on a pedicel. Harmer and Hastings have 

 called attention to the differences between this species and B. pacifica 

 Robertson which also has joints at the base of the branches. In addition 

 to the lack of calcification in mollis and the position of the avicularia, 

 which in pacifica are proximal to the opesia, it may be added that the ovi- 

 cell of mollis is longer and more projecting while in pacifica it is a short 



