NO. 9 MARINE INVERTEBRATES, ALASKA — MacGINITIE 183 



growing on it. An individual taken on August i, 1950, at 118 feet 

 contained pale coral eggs that appeared ripe. 



Three specimens of Molgida retortijonnis Verrill were taken at 

 120 feet (August 30, 1948), 125 feet, and 140 feet, and possibly a 

 fourth from 741 feet. 



Four individuals of a species of Molgula, probably new, were taken 

 at no feet. 



Another pebble-covered new species of Molgula was represented by 

 29 specimens from no, 125, 130, 184, and 217 feet. Some of those 

 from 184 feet were filled with eggs that had developed sufficiently that 

 the "tapole" larval tail could be seen. 



Rhizomolgula globularis (Pallas) is an almost spherical species 

 about the size of a small marble and so sand-encrusted that when it 

 is contracted the siphonal openings are difficult to see. It inhabits a 

 sandy-mud bottom, hence in the vicinity of Point Barrow it is limited 

 to a few spotty areas between the base and the village of Barrow. One 

 such area was found from 75 to 150 feet from shore and another about 

 a mile from shore, both at a depth of from 10 to 15 feet. Thousands 

 of these tunicates live in these localities. One short haul brought up 

 a dredge one-third full of little except these tunicates. The first time 

 the Eskimo boatman saw them, he exclaimed, "Ha, raisins!" In ii 

 specimens examined on September 8, 1948, both ovaries and testes 

 were developing; in one the testes had spawned out and the ovaries 

 were not quite mature, in two the ovaries were spawned out and the 

 testes were about half developed, and in another both testes and 

 ovaries were small. It is new to Arctic Alaska. 



One specimen of Eugyra glutinans (MoUer), new to Point Barrow, 

 was taken at 125 feet. 



Among the unidentified species is a slender, baseball-bat-shaped 

 tunicate that lives with the basal two-thirds embedded in the mud. It 

 was obtained at 10 and 120 feet and on shore after storms. Another 

 species that washed ashore was a stalked form with a clear tunic 

 through which the white testes and orange ovaries were visible. Still 

 another species of Molgula contained eggs approximately 0.7 mm. 

 long. 



Phylum VERTEBRATA 

 Class PISCES 



Although fishes were not within the scope of this project, any that 

 were found in the course of collecting invertebrates were preserved 

 and turned over to the U. S. National Museum in 1948 and to Nor- 



