NO. 9 MARINE INVERTEBRATES, ALASKA — MacGINITIE I39 



naidina Oersted from hydroids and bryozoans and on rocks from lOO 

 to 741 feet (abundant at 453 feet) ; Pionosyllis compacta Malmgren 

 from 216 and 477 feet (rare) ; asexual forms of Sphaerosyllis erina- 

 ceus Claparede from hydroids, bryozoans, and stones from 100 to 

 453 feet, and through the ice on February 14 and 18, 1950, and 

 sexual forms at the 80-foot plankton station on March 29 and April 15, 

 1950. S. erinaceiis, which is somewhat colorless to dusky, bears large 

 rose-colored eggs on its dorsal surface between setigers 8 to 24, one 

 to four per segment (125 feet on September 9, 1948). Another fe- 

 male (216 feet on October 6, 1949) was carrying large developing 

 larvae attached to its dorsal surface. 



Syllis cornuta Rathke, new to the western Arctic, was common in 

 hauls from 125 to 741 feet, being most abundant in hauls from 217, 

 420, and 453 feet. The epitokous form with swimming setae was taken 

 through the ice on February 14, 1950, at 149 feet, and on February 18, 

 1950, at 162 feet. Others were found swimming at the 80-foot plank- 

 ton station on March 29 and April 15, 1950. The eggs are rose-colored. 



Over 200 specimens of Syllis fasciata Malmgren, new to Arctic 

 Alaska, were dredged from no to 741 feet, the largest numbers com- 

 ing from 453, 175, 328, 217, and 741 feet. Two male stolons with 

 swimming setae, not reported previously but since described by Petti- 

 bone (1954), were taken on March 29, 1950, at the 80-foot plankton 

 station. 



Two nereids were collected : Nereis pelagica Linnaeus, uniformly 

 purplish or reddish-brown and iridescent in life, was taken from no 

 to 522 feet, and N. sonata Malmgren, new to Arctic Alaska, was taken 

 at Eluitkak Pass and at depths of 80 to 477 feet. Two specimens of 

 the latter species taken on August 21, 1948, were purplish brown an- 

 teriorly and creamy tan posteriorly, the light color undoubtedly being 

 due to eggs or sperm. 



Four nephtyids were collected: The detritus-feeding Nephtys 

 ciliata (O. F. Miiller), 2)7 specimens from 28 to 453 feet; N. discors 

 Ehlers, 4 specimens from 148, 213, 217, and 741 feet; N. longosetosa 

 Oersted, 16 specimens from Eluitkak Pass, 10, 60, and 150 feet, and 

 from the beach after a storm; and A^. paradoxa Malm, 2 specimens 

 from 141 and 741 feet. 



A single specimen of Glycera capitata Oersted new to Arctic Alaska 

 was taken on September 6, 1949, at 477 feet. 



One goniadid, Glycinde wireni Arwidsson, represented by 5 speci- 

 mens from 175, 138, and 162 feet, was collected. It is new to Arctic 

 Alaska. One lumbrinerid, Lumbrineris fragilis (Miiller) (29 speci- 

 mens — deep flesh-pink in life and sometimes banded with brown), 



