NO. 9 MARINE INVERTEBRATES, ALASKA — MacGINITIE 85 



plants. Hydroids — Tubularia sp., 3. Pelecypods — Nucula tenuis, 

 14; Astarte montagui, 8 ; Macoma calcarea, 15; M. oneilli, 2. 



Station 59 was in the mud-covered rubble zone but it yielded a 

 few more animals than some of the above stations. Most of these 

 are listed below: Sponges — Halichondria lamhei (C). Hydroids — 

 Lajoeina maxima (C). Nemerteans — Cerebratulus jitscus, i. Bryo- 

 zoans — Electra crustulenta (C); Crisia cribraria (C); Hincksina 

 nigrans (C) ; Bidenkapia spitsbergensis var. alaskensis, n. var. (C). 

 Polychaetes — Scalibregma inflatum, 3 ; Terebellides stroemi, 8 ; Chone 

 duneri, 4. Ophiurans — Amphiodia craterodmeta, 5. Copepods — 

 Choniostoma mirabile, 3. Amphipods — Haploops laevis, 44; Stego- 

 cephalus in flatus, i. Decapods — Eualus gaimardi, 34. 



Station 61 was in the rubble zone and had been covered with mud. 

 Representative animals from this station were: Nemerteans — Cere- 

 bratulus marginatus, i. Amphipods — Socarnes bidenticulatus, 3; 

 Acanthonotosoma serratum, 2; Maera danae, 5. Decapods — Pagurus 

 trigonocheirus, 6. Pelecypods — Yoldia myalis, 2; Musciilus niger, 

 2. Gastropods — Natica clausa, 3. 



Station 62 was in the rubble-zone depth and had been covered 

 with mud. Originally it may have been a special area of the rubble 

 zone in which gravel rather than stones predominated, for the dredge 

 brought up only mud and gravel without any stones. A laborious 

 search yielded the following animals : Anthozoans — Cerianthus sp., 

 4. Bryozoans — Alcyonidium pedunculatum, 3. Decapods — Eualus 

 gaimardi, 8. Pelecypods — Nucula tenuis, 7 ; Yoldia myalis, 2 ; Muscu- 

 lus corrugatus, 2 ; M. niger, 2 ; Macoma calcarea, 9. Gastropods — 

 Aquilonaria turneri, i (a rare species). 



The above collecting stations may be located on figure i . From one 

 to five or six hauls were made at each station. Had it been possible 

 to identify all the specimens, the list for each station would have 

 included other animals. 



In addition to the above stations, collections were made at a few 

 other places. For example, on the west side of Elson Lagoon at the 

 entrance to a small tributary lagoon, where the water was about 7 

 feet deep and was more or less brackish, the following animals were 

 taken on one occasion : Isopods — Idotaega entomon, 6. Amphipods — 

 Gammarus locustus var. setosus, 50; Gammaracanthus loricatus, 12; 

 Pseudalibrotus sp, (?), hundreds. 



TRAPPING THROUGH THE ICE 



As soon as the ocean was frozen over a mile or more from shore, 

 several holes 20 inches square were made through the ice with the 



