ANNELIDS. I. 



Only a few specimens have been secured. Considering it suitable to separate the two species 

 Eteone depressa and Eteone flava specifically until closer examinations on a more extensive material 

 exist, I have here only endeavoured to state the differences between the two named species. 



Eteone depressa is in shape more flattened than EL flava and the cephalic lobe of the former 

 has a somewhat different shape; that part of the cephalic lobe which bears the tentacles is separated 

 from the hinder part by a furrow (PI. V, fig. S), which does not seem to be found in Eteone flava. The 

 parapodium projects beyond the dorsal and ventral lamella. Further, the bristles are of different shape 

 in the two forms: In E. depressa the shaft of the bristle is provided with a single rather strong spine in 

 the tip; in EL flava I find two such spines almost equal in length. I do not agree with Augener 

 in his remark that "bei Et. flava die mittleren Dorsalcirren etwas gestreckter und zugespitzter er- 

 scheinen als bei /:'/. depressa." Comp. my figg. i and 15, PI. Y. 



Eteone flava (Fabricius). 



PI. V, figs. 2, 15, 16. 

 1799. Nereis flava, Fabricius: Betragtninger over Nereidesl. Naturhistorieselsk. Skrifter. 5. Bd, 1. H., p. 168. 

 1843. Eteone — , Orsted: Gronl. Ann. dorsibr. p. 34. 

 1865. - , Mahngren: Nord. Hafs-Ann. p. 102. 



Locality: 



West Greenland: 



Northern Stromfjord; Sanerutbugten 20—40111. Greyish mud with stones. 



; 12 miles from the mouth, 375 — 380 m. Clay with stones and rocks. 



East Greenland: 

 Turner Sound, 3 fms. 



Iceland: 



Bakkefjord, 12—15 fms. sand and clay. 



Dyrefjord. 



Faroe Islands: 



Traugisvag. Among laminariae. 





In Eteone flava the lamellae are more prominent than in the foregoing species; the dorsal as well 

 as the ventral lamella overlap the parapodium considerably (PI. V, fig. 15). The shape of the lamellae is 

 somewhat different from that of Et. depressa; the dorsal lamellae are almost circular; the ventral 

 lamella is oblong and more lengthened than in E. depressa. As noticed under the preceeding species 

 also the setae differ in the two forms. Possibly Et. flava is a more Arctic species than EL depressa. 

 According to Lev in sen they are both to be found in our seas and Southern states Et. flava as well 

 as Et. depressa from England. 



The Ingolf-Expedition. IV. ^. 9 



