HIMANTOZOUM 425 



fertile zooecia are a little longer and rounder than the others. The Challenger specimen 

 was found among unnamed material. 



em 



a.p.mu 







I 1 I 1 I 1 I ■ I . I 



A.B ^mm 



_J , I 



C -Emm 



Fig. 37. A, C. Himantozoum obtusum sp.n. St. WS 228, off Patagonian Shelf. In Fig. C, showing an ovicell 

 and the distal part of the fertile zooecium, the dotted lines indicate the frontal and basal limits of the 

 oblique distal wall. The distribution of the funicular tissue (stippled) is related to the position of the 

 embryo sac. B. H. antarctkum (Calvet). St. TN 194, off Oates Land. Ancestrula. 



a.p.mu. anterior bundle of parietal muscles, b. first bud, em. embryo, o. ovicell. 



3. Himantozoum sinuosum (Busk). 



Bugula sinuosa Busk, 1884, p. 39, pi. x, fig. 2. 



Himantozoum sinuosum Harmer, 1923, p. 312; 1926, p. 453. 



Bugula sinuosa var. variabilis (part) Kluge, 1914, p. 632, text-fig. 19 a (? pi. xxviii, fig. 6, not 



text-fig. 19 b). 

 ? Bugula sinuosa var. variabilis Hasenbank, 1932, p. 332, text-fig. 7. 

 Station distribution. Not represented in the Discovery collections. 



Geographical distribution. Prince Edward Island (Busk); Kerguelen (34. 11 .12.24, 2 S> 

 Challenger Coll.); Southern Ocean, 3397 m. (Kluge); off East Africa? 1668 m. (Hasenbank). 



In the type-specimen from Prince Edward Island (87 . 12 . 9 . 179) many of the zooecia 

 of the inner rows are fertile. The ovicell forms a very shallow cap, the edges of its two 

 layers being all that is visible in frontal view. It occupies the full width of the distal 

 end of the zooecium between the pointed distal corners. In the inner series pointed 

 corners are only present, on fertile zooecia, the non-fertile zooecia having a rounded 

 end. Busk's figure (pi. x, fig. 2a) shows five fertile zooecia and one non-fertile zooecium 



