Bryozoa. 461 



ceals the whole frontal surface of the real ooecium. Sometimes it 

 seems as if three difterent zooecia take part in the formation of it, 

 and in such cases its surface consists of three different parts sepa- 

 rated by suturai lines. In the small colony examined all the zooecia 

 are provided with ooecia, and in most of them the ooecial cover 

 together with the lateral margins of the aperture and laminar exten- 

 sion from the neighbouring zooecia takes a larger or smaller part in 

 the formation of a peristome by extending more or less far beyond 

 the proximal margin of the real ooecium. Such a more or less 

 projecting shade-like extension may be provided with an entire 

 margin, curved from side to side, or the latter is provided with one 

 or more larger or smaller sinuations. 



A small colony on algæ. 



St. 63, Stormbugt, 10—20 m. 



Discopora radiatula Hincks, 

 Cellepora plicata Smitt, (partim), op. cit. 1867, Bihang, Tab. XXVIII, 



flg. 193. 

 Lepralia radiatula Hincks, Ann. Nat. Hist. 4. ser. Vol. XIX, p. 104, 



PI. X, figs. 9—14. 

 Rhamphostomella radiatula Lorenz, op. cit. p. 95, Taf. VII, fig. 9. 



— — Nordgaard, Hydr. and Biol. Invest, p. 172, 



PI. V, figs. 16, 17. 

 The tooth is high, narrow, and decreases in breadth towards the 

 lip, which is either roundedly pointed or provided with a short 

 straight edge. The ooecia have a semi-circular outline, and in a 

 number of them the marginal portion is concealed by an ooecial cover. 

 A few small colonies on algæ. 

 St. 66, Stormbugt, 30-40 m. 

 St. 68 a, Øresund, 40—60 m. 

 St. 69, Stormbugt, 26—30 m. 



Discopora bilaminata Hincks. 

 Cellepora bilaminata Hincks, Ann. Nat. Hist. 4. ser. Vol. XIX, p. Ill, 



PI. XI, figs. 6, 7. 

 Rhamphostomella bilaminata Lorenz, op. cit. p. 95, Taf. VII, fig. 11. 

 — — Nordgaard, Bryozoa, 2nd. Fram-Exp. p. 



33, PI. IV, fig. 57. 

 — Osburn, op. cit. p. 244, PI. XXVI, figs. 



62—61 a. 

 In the colonies examined there is found a very deep and some- 

 times extremely narrow sinus between the generally large oral avi- 

 cularium and the opposite rounded almost ligulate peristomial lobe. 

 The median tooth, which, is very often completely hidden by the 



