356 DISCOVERY REPORTS 



Tricellaria Fleming, 1828 



1. Tricellaria monotrypa (Busk). Fig. 17 A. 

 Cellnlaria monotrypa Busk, 1852a, p. 368. 

 Cellularia cuspidata Busk, 18526, p. 19, pi. xxvii, fig. 12. 

 Tricellaria monotrypa Harmer, 1923, p. 355. 

 Bugulopsis cuspidata Stach, 1937, p. 378. 

 Station distribution. New Zealand: St. 934. 



Geographical distribution. New Zealand (Busk; Terra Nova; Discovery); Bass Strait (Busk; 

 Livingstone). 



L 







A 



I ■ » 



•5mm 







B 



•3mm 



Fig. 17. A. Tricellaria monotrypa (Busk). St. 934, New Zealand. Fertile and non-fertile zooecia. B. Scrupo- 

 cellaria ornithorhyncus (Thorn.). 97. 5.1. 219. Port Phillip Heads. To show tuberculation of distal 

 border of aperture of fertile zooecium. Curious shapes of spines may be due to regeneration. 



The ovicell (Fig. 17 A) was observed and described by Busk (1852^). It is shallow 

 and endozooecial, incapable of accommodating the whole embryo. The fertile zooecium 

 bears a little spike-like spine on the inner distal corner, curved towards the ovicell. 



2. Tricellaria aculeata (d'Orbigny). 

 Bicellaria aculeata d'Orbigny, 1847, p. 8. 



Tricellaria aculeata d'Orbigny, 1842, pi. ii, figs. 1-4; Harmer, 1923, p. 355; Monod and 

 Dollfus, 1932, p. 61. 



