VAN NAME: COMPOUND ASCIDIANS. 369 
exceed in length the body of the zooid, but oftener only from three to 
six embryos will be found, the length of the pouch and the number 
of embryos it contains being dependent on the rate at which repro- 
duction is going (m. 
In European waters this s})ecies has been found along the Norwegian 
and ^lurman coasts, and at Spitzbergen, in depths from 20 to 150 
fathoms (Hartmeyer, 1903; Bjerkan, 1905; Redikorzew, 1907a). 
The American specimens are from various localities from Newfound- 
land to Cape Cod, 90 fathoms being the greatest depth. The stations 
are as follows: 
(1) Station 2i56 (off Newfoundland, N. lat. 47° 29', W. long. 
52° IS', 86 fathoms, gravel, July 2, 1885). One colony. 
(2) Station 2699 (off Newfoundland, N. lat. 45° 04', W\ long. 
55° 23', 72 fathoms, August 22, 1886). Many small colonies. 
(3) Station 100 (off Halifax, N. S., N. lat. 44° 28', W. long. 63° 18', 
42 fathoms, September 15, 1877). 
(4) Station 44 (off Nova Scotia, N. lat. 43° 06', W. long. 65° 04.5', 
90 fathoms, estimated, fine sandy mud, August 21, 1877). Two 
rather large colonies. 
(5) Station 43 (off Nova Scotia, N. lat. 43° 05.5', W. long. 65° 02', 
90 fathoms, estimated, August 21, 1877). Three rather large colonies. 
(6) Grand Manan, N. B. (Bay of Fundy). Many specimens. 
(7) Eastport, Maine. Many specimens. 
(8) Station 4 (near Baker's Island, off Salem, Mass., 22 fathoms, 
gravelly, August 4, 1877). Very poor specimen, doubtful. 
(9) Station 371 (12 miles off Chatham, Mass., N. lat. 41° 35.5', 
W. long, 69° 35', 34.5 fathoms, coarse sand, September 19, 1879). 
One colony. 
The species of this genus described by the writer as Disfaplia 
hermudensis in his account (1902) of the ascidians of Bermuda Islands,' 
but which should now be called Holozoa bermuden<sis, appears to be 
sufficiently distinct from the present one. The colony forms a thick 
flat crust, or more or less distinct heads, the systems are inconspicuous, 
and the zooids are decidedly smaller and always have a smooth-walled 
stomach. 
