20 



kjonsorganet eii liggende S, idet den i tarmslyngen liggende 

 del egentlig danner eu tæt sararaentrykt slynge. Paa den 

 øvre rand sees talrige smaa papilleagtige udførselsgange. 



Systematiske bemærkninger. Efter Herdmans bestem- 

 melsestabel over Eugyra'^) raaatte denne form stilles nær 

 Eiiqyra lierguélensis, Herdm. fra Kergueland Island. Begge 

 har en tynd, sjennemsigtig kapjDe lulen sand og en meget 

 lint bygget gjællesæk; dog lindes i modsætning til den nor- 

 ske form hos E. l;ergnélensis enkelte rette spirakler mellom 

 spiralsystemerne, endvidere er muskulaturen svagere, ten- 

 taklerne og flimregruben anderledes bygget og siphonerne 

 sidder længre fra hinanden-). Disse forskjelligheder fjerner 

 de to arter betydeligt fra liin anden. 



Udbredelse. 1 exempl. fundet ved Beian i Trond- 

 hjemsfjorden af hr. stipendiat Huitfeldt-Kaas (1894). 



') Herdmau, Revis. Classification of Tuiiicata, Jourii. of Linn. Soc. 



Zoology, Vol. 23, 1891, pag. 563. 

 -) Herdmau. Tunicata, Challenger, Zoology, Vol. VI, pag. 81, pl. 



VI, fig. 4— it. 



Seen from within it resembles a recumbent S, the portion 

 lying in the looj) of tht' intestine forming a closely com- 

 pressed loop. On tlie upper margin are numerous small 

 papilla like excretory ducts. 



Systematic Remarks. According to Herdman's defi- 

 nition of Eugyra^), this fonn must be placed near Eng gra 

 Ixergnelensis, Herdm., from Kerguelen Island. They botli 

 have a thin transparent tunic without sand, and a bran- 

 chial sac of very delicate structure. In E. kerguelensis, 

 there are found, as opposed to the Norwegian form. a few 

 straight spiracles l)etween the spiral systems; moreover. 

 the musculature is weaker. the tentacles and the dorsal 

 tubercle are diiferently formed. and the siphons are situated 

 at a greater distance from one another-). These diftercnces 

 separate the two species rather widely. 



Distribution. One speciraen was found at Beian on 

 the Trondhjem Fjord, by Mr. Huitfeldt-Kaas (1894). 



') Herdmau, Re-i-is. Classification of Tunicata: .Tourn. of Linn. Soc. 



Zoology. Vol. 2.), l!<itl, p. .'103. 

 -j Herdman, Tunicata, Challenger, Zoology, Vol. VI, p. ^1, pl. VI, 



figs. 4—9. 



