NO. 3 OSBURN : EASTERN PACIFIC BRYOZOA — CYCLOSTOMATA 677 



distinguishable by the conspicuous black joints and by the ovicell, which 

 is more slender, adnate to the internode for its full length, and with a 

 terminal ooeciostome. 



Filicrisia geniculata (Milne-Edwards), 1838 

 Plate 72, fig. 5 



7 Crisidia gracilis Trask, 1857:113. 



Crisia geniculata, Robertson, 1910:235. 



Crista ffeniculata, O'Donoghue, 1923:7; 1926:18. 



Filicrisia geniculata, Borg, 1926:263 and 351. 



Zoarium bushy, the branches nearly straight, reaching a height of 15 

 to 25 mm. The zooecia are tubular, straight, 0.60 to 0.90 mm long, 

 3 to 5 to an internode (except basally). In the older zooecia the joints 

 are black and conspicuous. 



The ovicell is long and but little inflated, adnate for its entire length, 

 the ooeciostome situated near the dorsal border with its tube bent for- 

 ward (sometimes straight). In the absence of the ovicell it is impossible 

 to distinguish positively between this species and franciscana. For this 

 reason the Crisidia gracilis of Trask must remain in doubt, though it 

 appears to be one of these two species. 



Robertson first noted the presence of this species on the Pacific coast 

 and recorded it from Dillon Beach, north of San Francisco, to San 

 Pedro, California. O'Donoghue listed it from numerous localities in 

 British Columbia. 



Hancock Stations: Not taken in dredging, but found at numerous 

 shore stations in shallow water about the islands of southern California 

 and along shore from Monterey Bay south to San Pedro, California; 

 well distributed in this area, but never abundant. It appears to be more 

 common farther northward. 



Filicrisia franciscana (Robertson), 1910 



Plate 72, fig. 4 



Crisia franciscana Robertson, 1910:233. 

 Crisia occidentalis, Robertson, 1903:116. 

 ? Crisidia gracilis Trask, 1857:113. 

 Crisia franciscana, Okada, 1917:338. 

 Crisia franciscana, O'Donoghue, 1923:7. 

 Crisidia franciscana, O'Donoghue, 1926:19. 



This species resembles C. geniculata in practically all respects except 

 for the ovicell. The zoarial form and the number of zooecia to the 



