0. NORDGAARD. [Snd ARC. EXP. FRAM 



Order Crymnolsemata' 



Sub-order Cheilostomata. 



Gen. Gemellaria, Savigny. 



1, Gemellaria, loricata,, Lin. 



July 5, 1901, the Sound; July 9, 1901, between Ren Bay and Cape 

 Land's End. 



As Smitt^ has indicated, the length of the zooecia is subject to con- 

 siderable variation. In a colony on Hyas coardatus from northern 

 Norway (North Gape, 1894), the zooecia had a length of 0,52 mm., while 

 the aperture measured 0.26 mm. The corresponding measurements in 

 a colony from Station 363 of the Norwegian North Atlantic Expedition 

 (80° 3' N, 8° 28' E, depth 475 metres) were respectively 1.1 mm. and 

 0.32 mm.; and in specimens from the 2nd Fram Expedition (July 9, 1901), 

 the corresponding measurements were found to be 1.0 mm. and 0.58 mm. 

 On colonies from Northumberland Island (West Greenland), Anders 

 Hennig^ found that the length of the zooecia was 0.74 mm., and that of 

 the aperture 0.34 mm. The high arctic forms of this species thus seem 

 to be characterised by a lengthening of the zooecia. 



Gen. Menipea, Lamouroux. 



2. Menipea, gracilis, J. van Beneden^. 



July 22, 1900, winter haven, about 30 fathoms; Sept. 19, 1900, off 

 the mouth of Forvisnings Valley, 2—20 fathoms; Sept. 20, 1900, the 

 head of Gaase Fjord; July 8, 1901, Ren Bay; July 12, 1901, bay at 

 Land's End; July 19, 1901, lower end of Gaase Fjord; August 16, 1901 

 Gaase Fjord, about 7 fathoms. 



In specimens from Ren Bay (July 8, 1901), there wei'e 9 zooecia in 

 one internodium. In colonies from Gaase Fjord (Aug. 16, 1901), the aper- 

 ture of the zooecia had a length of 0.39 mm. and a breadth of 0.195 mm. 



' Ofversigt af Kgl. Vet. Akad. Forh., 1867, p. 325. 



2 Bryozoer frdn Vestgronland. Ofvers, Kg!. Vet. Akad. Forh., 1896, p. 353. 



3 See Norman. Ann. Mag. Nat. Hist., ser. 7, Vol. 11, p. 578. 



