Bryozoa. 453 



Schizoporella sinuosa Busk. 

 Escharella linearis, forma secundaria Smitt, op. cit. 1867, Bihang, pp. 



14 and 99, Tab. XXV, figs. 74—77. 

 Schizoporella sinuosa Hincks, op. cit. p. 266, PJ. XLII, figs. 1 — 6. 



— — Osburn, op. cit. p. 238, PI. XXV, figs. 51, 51 a. 



A small colony on Saxicava rugosa and another on a stone. 

 St. 71a, off Cap Bismarck, 30-40 m. 



Schizoporella (Emballotheca) stylifera Levinsen. 



Escharella stijlifera Levinsen, Bryozoer fra Kara-Havet (Dimphna- 



Togtets zool.-bot. Udbytte), p. 321, Tab. XXVII, 

 figs. 9— 114 



Schizoporella condylata Nordgaard, Bryozoa from the 2nd Fram-Exped. 



p. 18, PI. II, figs. 16-18. 

 (PI. XXIII, figs. 3, 4, 5, 6, 7). 



The zooecia which are rather convex are separated by extremely 

 fine raised lines; the very tuberculous surface presents a number 

 of ramified lines converging towards the aperture, the presence of 

 which must undoubtedly be explained from the mode of calcification. 

 There are rather few small pores, a number of which are marginal. 

 The aperture, which is placed at the distal end, is provided with 

 a fairly broad and deep sinus, the breadth of which is contained twice 

 in that of the aperture, and with a distinct but low vestibular arch. 

 The sinus is bordered by two large rounded hinge-teeth. Gradually 

 there is developed a proximal (suboral) low peristome, provided with 

 a low, indistinctly defined sinus, which conceals a larger or smaller 

 portion of the primary sinus. The distinctly chitinized operculum 

 is provided with a marginal thickening and with two muscular dots. 

 The distal wall is provided with two, the distal half of each lateral 

 wall with three rosette-plates with 1 — 3 pores. 



The ooecia, the endoooecium of which is distinctly translucent, 

 are a little broader than high, nodulous, not very convex and their 

 cryptocyst is formed by three different pieces (one distal and two 

 proximal) rising from the three surrounding zooecia and meeting 

 each other in three sutures. At their point of union there is often 

 seen a small pore. 



The two small colonies from the Kara Sea, on which in my first 

 paper on Bryozoa I founded E. stylifera, agree in all essentials with 

 Nordgaard's S. condijlata, but as I have overlooked the suturai lines 

 and regarded the opercular muscles of some zooecia as styliform 

 processes from the margins of the aperture, it has not been possible 



1 Not as indicated p. 17, 8—10. 



