NO. 9 MARINE INVERTEBRATES, ALASKA — MacGINITIE 69 



Station 22 was in the typical rubble zone and yielded an abun- 

 dance of species and individuals: Anthozoans — Sea anemones (C). 

 Turbellarians — Notoplana atomata, 2. Nemerteans — Amphiporus an- 

 gulatus, 3. Bryozoans — Tricellaria erecta (C); Porella compressa, 

 I large; Costasia ventricosa, i; Flustrella corniculata (C). Ento- 

 procts — Barentsia gorbunovi, few. Ophiurans — Gorgonocephalus 

 stimpsoni, 2. Echinoids — Strongylocentrotus drohachiensis, 33. 

 Holothurians — Psoliis jabricii (AA). Isopods — Janiralata sp., 9. 

 Amphipods — Mesometopa gihhosa, n. sp., 6 ; Stenothoides angusta, 

 n. sp., 8; Sympleustes uncigerus, 13; Guernea nordenskioldi, 6; 

 Eurystheus melanops, 7; Dulichia porrecta, 2. Decapods — Sclero- 

 crangon horeas, 2 ; Eualus gaimardi, 1 1 ; Pagurus splendescens, 6; 

 Hyas coarctatus alutaceus, 8. Pelecypods — Hiatella arctica (AA). 

 Gastropods — Margorites frigidus, 9 ; M. vahli, 5 ; Lepeta caeca, 2. 

 Tunicates — Dendrodoa pidchella (C) ; Boltenia echinata, 5. 



Station 23 was also in the typical rubble zone, about 6 miles from 

 shore — as far as it was possible to go on account of the ice. Animal 

 life was abundant : Hydroids — Tubidaria sp., 2. Anthozoans — Sea 

 anemones, 123. Turbellarians — Notoplana atomata, 2. Nematodes — 

 Thoracostoma sp., 9 (from rocks broken apart). Nemerteans — 

 Amphiporus groenlandicus, 2. Bryozoans — Eiicratea loricata (C) ; 

 Bidenkapia spitshergensis, 2 ; Euritina arctica, n. sp., few; Ragionula 

 rosacea, 3; Pachyegis princeps, 6; Rhamphostomella gigantea (C) ; 

 Costazia ventricosa (C) ; Myriosoella plana (C) ; Lichenopora ver- 

 rucaria (C). Polychaetes — Catty ana cirrosa, 11; Potamilla reni- 

 formis, 11. Ophiurans — Gorgonocephalus stimpsoni, 4; Amphiura 

 simdevalli, 17+ ; Ophiopholis aculeata, 29; Ophiura robusta, 15. 

 Echinoids — Strongylocentrotus drobachiensis, 73. Holothurians — 

 Psolus jabricii, 86. Copepods — Herpyllobius arcticus, 2. Amphi- 

 pods — Ericthonius tolli (C). Decapods — Hyas coarctatus alutaceus, 

 6. Gastropods — Pyrulofusus deformis, i ; Neptunea sp., 4. Tuni- 

 cates — Aplidiopsis pannosum, 3; Chelyosoma macleayanum, 3; Den- 

 drodoa pulchella, 6; D. grossidaria, 9; Halocynthia aurantium, 3. 



Station 24 was at the very edge of the rubble zone and was char- 

 acterized by pebbles rather than stones, a large quantity of old broken 

 shells (largely Hiatella), and considerable mud. It was over a mile 

 nearer shore than Station 21, and it was not nearly so rich in animal 

 life. Animals: Hydroids — Unidentified calyptoblast (C) ; Obelia sp., 

 few col.; Lajoeina maxima (A); Sertularella sp. (?) (C). Bryo- 

 zoans — Carbasea carbasea, 6; Tricellaria erecta (C) ; Porella com- 

 pressa, 3 large; Rhamphostomella fortissima, 2 large; Costazia nor- 

 denskjoldi (C) ; Alcyonidium pedunculatum, several. Cumaceans — 2 



