454 G. M. R. Levinsen. 



for this author to recognize the identity of this species. The suturai 

 lines of the ooecia are much finer than in the colony from the Dan- 

 mark Expedition and they are absent in some of the ooecia, which 

 are surrounded only by a single zooecium. Only a number of 

 marginal pores are found. 



Porinula n. g. 1 



The zooecia which seem to lack a covering membrane are pro- 

 vided with a well-developed tubular peristome, in the proximal portion 

 of which there is found a tubular pore. A distinctly defined oper- 

 culum. No vestibular arch. A calcified ectoooecium with or without 

 pores. The ancestrula has a similar structure as the other zooecia. 

 A few small colonies have been found on stones and balanus. 



St. 63, 70, 71 a. 



The ooecia are without pores and the pores without marginal 

 processes. 



Microporella ciliata Pallas. 

 Porina ciliata Smitt, op. cit. 1867, Bihang, pp. 6 and 58, Tab. 



XXIV, figs. 13-16. 

 Microporella ciliata Hincks, op. cit. p. 206, PI. XXVIII, figs. 1—8. 



— — Levinsen, Mosdyr, p. 64, Tab. V, figs. 33 — 35. 



— arctica Norman, Ann. Nat. Hist. Ser. 7, Vol. XII, p. 105. 



— — Osburn, op. cit. p. 233, PI. XXIV, figs. 44— 44 c, 



PI. XXX, fig. 90. 



A very small colony on a stone. 

 Locality uncertain, probably Stormbugt. 



Escharina vulgaris (Moll.). 



Mollia vulgaris, forma ansata Smitt, op. cit. 1867, Bihang, pp. 14 and 



104, Tab. XXV, figs. 78—80, 82. 

 Schizoporella vulgaris Hincks, op. cit. p. 244, PI. XXXVII, fig. 7, PI. 

 XV, figs. 5, 6. 



— stormi Nordgaard, Hydr. Biol. Inv. Norw. Fj., p. 166, 



PI. V, figs. 1, 2. 



— — Nordgaard, Bryozoa sec. Fram Exp., p. 17, PI, 



I, figs. 10 & 11. 



— bispinosa Nordgaard, ibidem, p. 17, PI. II, fig. 15. 



(PI. XXIII, figs. 8, 9, 10, 11). 

 St. 72, Danmarks Havn, 10— 15 m. 



1 A species pertaining to this genus has not been found neither in the M S., nor 

 among the figures, nor in the collection. 



