Bryozoa. 437 



A number of small colonies fixed to algae. 

 Station 63, Stormbugt, 20— 40 m. 

 Station 72, Danmarks Havn, 10 — 15 m. 



Scrupocellaria ternata Ellis & Sol. var. gracilis Smitt. 



Cellarina gracilis Van Ben., Bull. Acad. Roy. Belgique XV, p. 70, PI. 



X, figs. 1, 2. 

 Cellularia ternata, forma gracilis Smitt, op. cit. 1867, pp. 283 and 308, 



Tab. XVI, figs. 14—24. 

 Menipea arctica Ridley, Annals Nat. Hist, S. V., Vol. VII p. 444. 

 — gracilis Busk, Journ. Linn. Soc, Zool., Vol. XV, p. 232. 

 Scrupocellaria ternata, var. gracilis Waters, Journ. Linn. Soc, Zool., 

 p. 55, PI. VII, fig. 12. 

 (PI. XIX, figs. 2, 3). 



As I have pointed out in my work on the Cheilostomatous 

 Bryozoa (pag. 132, foot-note) this species possesses a vibraculum ^ 

 which differs from the other vibracula found in this family in the 

 lack of a flabellum, whereas the distal end is provided with a round 

 aperture covered by a membrane. Like the other vibracula in this 

 family it is divided into two compartments by a wall provided with 

 a rosette-plate (fig. 2), and a radical fibre may take its origin from an 

 aperture in the proximal compartment. By means of reagents it 

 may be isolated from the zooecium, being provided with an inner 

 wall of its own. 



A few small fragments from Station 63, Stormbugt, 20—40 m. 



Bugulopsis Peachii (Busk). 



Cellularia Peachii Smitt, op. cit. 1867, pp. 285, 322, Tab. XVII, 



figs. 51—53. 

 — — Hincks, op. cit. p. 34, PI. V, figs. 2—5. 



Scrupocellaria Peachii Waters, Journ. Linn. Soc, Zool., Vol. XXVIII, 



p. 58. 

 Bugulopsis Peachii Verrill, Amer. Journ. Science and Arts, Vol. 



XVIII, pp. 52—54. 

 Cellularia Peachii Osburn, Bull. Bur. Fish., Vol. XXX, p. 223, 



PI. XXI, fig. 20 bis. 

 Bugulopsis Peachii Nordgaard, Bryozoaires, p. 7. Due d'Orleans, 



Campagne arctique de 1907. 



1 This rudimentär}' vibraculum lias been figured by Smitt, who in the explana- 

 tion of pi. 16 mentions it in the following way: "The upper part of this 5л\е11- 

 ing corresponds to the vibraculum which in the following species is found in 

 this place". 



