NO. 9 MARINE INVERTEBRATES, ALASKA MacGINITIE 65 



the dilution of the ocean water by the fresher water from Elson 

 Lagoon. At Eluitkak Pass the octocoral Eunephthya riibiformis was 

 especially abundant, and the flared-goblet-shaped sponge Echino- 

 clathria beringensis was found in greater numbers and larger size 

 than in any other locality. 



Important animals from Eluitkak Pass: Sponges — Cioxeamistia 

 sp., 2; Halichondria lamhei (C).^ Hydroids — Hydractinia sp., 2; 

 Clytia sp., 6-10; Ohelia sp., several; Lajoeina maxima (C-A). Antho- 

 zoans — Eunephthya rubijormis (AA) ; Hakampa duo-decimcirrata 

 (?), i; Stomphia coccinea, 4. Turbellarians — Notoplana atomata 

 (A, 20 in one haul). Nemerteans — Amphiporus lactifloreus, 6. 

 Priapulids — Halicryptus spinulosus, i. Bryozoans — Eucratea loricata 

 (C) ; Carbasea carbasea (A), perhaps more abundant here than at 

 any other station; Tegella armijera (C) ; Scrupocellaria scabra var. 

 paenulata, several ; Cystisella bicornis, n. sp., few ; Crisia cribraria 

 (C) ; Alcyonidium peduncidatum (A). Polychaetes — Harmothoe 

 imbricata, 25; Castalia aphroditoides, 12 (nearly one-half of the 

 28 specimens of this species collected came from three hauls from 

 Eluitkak Pass) ; Eusyllis blomstrandi, 25 ; Cirratulus cirratus, 14. 

 Copepods — Herpyllobius arctims, 8; unidentified copepod from 

 sponge Echinoclathria beringensis (A). Cirripedes — Balanus crena- 

 tus (AAA). Isopods — Idotaega entomon (A) ; /. sabini (A). Am- 

 phipods — Acanthostepheia behringiensis, 3 ; Paramphithoc polyacan- 

 tha, 4; Atyliis carinatus, 19 (the only place this species was taken 

 except for four at 10 feet and one that washed ashore) ; Gammarus 

 locustus var. setosus, 4; Gammaracanthiis loricatus, 6; Ischyrocerus 

 latipes, 21. Decapods — Pagurus splendescens, 4; P. trigonocheirus, 8. 

 Pelecypods — Musculus niger, 2; Astarte borealis, 16; Hiatella arctica 

 (AAA). Gastropods — Neptunea sp., 5; Buccinum angtdosum, 6. 

 Tunicates — Molgida griffithsi (AA). 



Station 5, in the gravel zone, yielded very little animal life : 

 Hydroids — Obelia sp., i col. Echiuroids — Echiiirus echiuriis alas- 

 kaniis, tail end of one specimen. Bryozoans — Alcyonidium disciforme, 

 I. Amphipods — Weyprechtia heuglini, 3. Isopods — Idotaega ento- 

 mon, I (1.5 inches). Fishes — Limanda aspera, i (1.5 inches). 



Station 7 was evidently where a tongue of gravel extended into 

 the mud zone from the rubble zone. Animals : Bryozoans — Rham- 

 phostomella gigantea, n. sp., i large. Amphipods — Protomedeia fas- 

 ciata, 3 ; Dulichia porrecta, 9. Decapods — Pagurus splendescens, 14 ; 



2 In this discussion (C) := common, (A) = abundant, (AA) =:very abundant, 

 (AAA) = exceedingly abundant, (R)=rare, and col. = colony or colonies. 



