I04 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 128 



Bero'e cucumis was seen, and a specimen of Chrysaora was taken. 

 It contained well-developed eggs and many planulae. Two male 

 Hyperoche mednsarum were attached to the jellyfish. A duck was 

 surface diving in the lead. 

 11-20-49 Some of the ice is moving slightly in the direction of the village and 

 the lead of yesterday is narrowing. Most of the lead water now has 

 approximately i inch of ice on it and elsewhere the ice is about 

 II inches thick. Two or three species of amphipods were collected 

 when the ice was broken through. Thirty or forty ducks were 

 swimming in water that had a thin crust of ice on it. 

 12- 2-49 The last eider ducks were seen today. The ocean was late in freezing 



over. 

 8-10-50 The following animals were found on the beach: 



Travisia carnea 4 



Crossaster papposus i 



Myriotrochus rinki Common 



8-16-50 Cyanea capillata (up to 12 inches in diameter) abundant. No com- 

 mensal amphipods noted. 

 8-23-50 The following animals were found on the beach : 



Alcyonidinm disciforme Abundant 



Melita jormosa Abundant 



Idotacga entomon Few 



Serripes groenlandicus Few 



Hiatella arctica Few 



Egg collars of Polinices Common 



Rhisomolgula globularis Abundant (up to 20 mm. in diameter) 



Tunicate (sp. i) Few 



8-24-50 A few Echiurus echiiirus alaskanus and a few Arenicola glacialis. 

 8-28-50 The isopod Idotaega sabitti abundant. Examined 26 — all females, none 



ovigerous. 

 8-29-50 One ctenophore, Bero'e cucumis. 

 9- 1-50 A few jellyfishes, Chrysaora sp. 



ANALYSIS OF PLANKTON SAMPLING 



To obtain a complete picture of the plankton situation would re- 

 quire more time than has already been given to the entire investiga- 

 tion of the invertebrate fauna. Also, such a project should be carried 

 on both summer and winter for not less than three years. The stafif 

 connected with this investigation was not large enough to give plank- 

 ton the attention it deserved. However, many pages of notes were 

 accumulated covering the plankton sampling. Although they are too 

 extensive to be included in full here, certain conclusions can be drawn 

 from them, and much information from them will be found under the 

 discussion of the different phyla. 



For instance, there is evidence pointing to a cyclical abundance of 



