NO. 1 OSBURN : EASTERN PACIFIC BRYOZOA CHEILOSTOMATA 129 



Genus GABEREA Lamouroux, 1816 

 The zoarium is rather coarse and usually without joints, though one 

 or more may be present in a colony. The vibracula are large, covering a 

 large part of the dorsal surface and exposed from the frontal view, the 

 setae strong and elongate and minutely feathered toward the tip. The 

 radicles pass downward along the midline of the stalk. Genotype, Caberea 

 dichotoma Lamouroux, 1816. 



Key to Species of Caberea 



Without a scutum ellisi 



Scutum present boryi 



Caberea boryi (Audouin), 1826 

 Plate 15, figs. 4, 5 and 6 

 Caberia boryi, Harmer, 1926:362. 

 Caberea boryi, O'Donoghue, 1923:19; 1926:41. 



The zoarium is small and delicate and is less flabellate than C. ellisi. 

 The zooecia are comparatively small, 0.35 to 0.40 mm in length, the 

 opesia occupying about three-fourths of the frontal length; the crypto- 

 cyst is broad, especially at the proximal end where it is shelf-like. The 

 scutum presents a very diagnostic character, as its distal border extends 

 straight across the opesia and unites with a prominence on the opposite 

 side, thus forming a bar which closes off the aperture; the proximal lobe 

 of the scutum is broadened to cover a considerable portion of the opesial 

 area. There are two or three outer spines and one inner. 



The frontal avicularia are usually small, elevated, with a triangular 

 mandible, but among these, especially on the axillary zooecium below a 

 bifurcation, are giant avicularia, much elevated, swollen, with a very 

 strongly hooked rostrum. The lateral avicularia are minute. 



The vibracular chamber covers only a little more than half of the 

 dorsal side of a zooecium, but its groove extends to the midline of the 

 branch. The seta is long and strong and the barbules extend nearly to 

 its base. 



The ooecia are rounded, smooth, imperforate, with a frontal area 

 which is not covered by the ectooecium. 



Reported by O'Donoghue at several stations in British Columbia 

 waters. A cosmopolitan species, known from the coasts of Europe, Aus- 

 tralia and the East Indies, Japan, Patagonia and elsewhere. 



Hancock Stations, 287-34, South Bay, Cedros Island, Lower Cali- 

 fornia, 10 to 15 fms; 1190-40, Anacapa Passage, southern California, 15 

 to 50 fms; 72, Guadalupe Island, Lower California, 17 fms. The writer 

 also has a specimen from the Gulf of California, presented by Dr. H. 

 R. Hill. 



