PI. III. 



Fig. 28. Scliisoporella sinuosa, Busk, 1894, Heg i Trondhjemsfjorden, pore-chambers, 

 tp, terminal p. c, ^'/,. 

 29—30. Schisoporella sinuosa, Busk, "/a 1899, 0stnesfjord, Lofoten. 



29. Ooecium and the anterior part of the zooBC, *'/,. 



30. Operculum, *^/,. 



31—32. Scliisoporella sinuosa, Busk, '^/j 1899, Digermulen, Lofoten. 



- 31. Zoo3cia, "/i. 



- 32. Operculum, «Vi. 



- 33—35. Eschara suturata, Nordg., n. sp., '^Z, 1901, North of Cape Land's End. 



33. Zocecium, '^/,. 



34. Ooecium, s and s are sutural lines, ^^/i. 



35. Operculum, *^/i. 



- 36—37. Eschara Mpposus, Smitt, '"/- 1901, Ytre Gaasefjord. 



36. Oral aperture, ^^/,. 



37. Operculum, ®'/i. 



38. Porella saccata. Busk, ^"/^ 1900, Vinterhavnen, '/i- 



39. Porella plana, Hincks, "W 1900, Vinterhavnen, Operculum, *^/,. 



- 40—42. Porella umbonata, Nohdg., n. sp., Aug. 1900, Vinterhavnen. 



40. Zocecia with ooecium, ^^Z,. 



- 41. Mandible, ""/i- 

 42. Operculum, "'/,. 



43—46. Porella alba, Nordg., n. sp., '^Z? 1901, Bugt ved Landsend. 

 48. Zooecia, ^^Zi. 

 44. Operculum, ^'Zi- 



- 45. Mandible, ^eo/^. 



46—47. Smittina minuscula, Smitt, "Zt 1901, Bugt ved Landsend. 

 46. Zooecia, ^"/i- 



- 47. Oral denticle, ^Vi- 



