MENIPEA 337 



Avicularia: frontal and marginal, constantly present, with well-developed beak. 



Ovicells (Fig. 7 B), cap-like, embryo developing in large ovisac in body cavity. 



Remarks. This species is most nearly related to M. flagellifera, which it resembles 

 in the general form of its colony and zooecia, in its granular cryptocyst and in its cap- 

 like ovicells. It differs in its frontal avicularia which have a short triangular mandible. 

 The avicularian chamber of M. kempt is not unlike that of M. flagellifera in outline, but 

 it projects more, having a raised and prominent beak. The differences between the 

 flagelliform mandible of the one species, with its basal condyles, and the small triangular 

 mandible of the other, are constant and very pronounced. The marginal avicularia of 

 M. kempt are somewhat turned towards the frontal surface. 



M. kempi also resembles M. patagonica. It differs chiefly in the possession of ovicells, 

 however small, M. patagonica having similar embryo sacs but no trace whatever of 

 ovicells. M. kempi also differs from M. patagonica in its granular cryptocyst; in its 

 shorter opesia ; in its frontal avicularia which are larger with a more strongly developed 

 beak ; in the greater variability in the number of zooecia composing the internodes, and 

 the greater distance of the joints from the axil ; and in the very small size of the outer 

 distal spine and the absence of the inner one. The marginal avicularia of M. patagonica 

 tend to have their beak turned obliquely towards the frontal surface, but in M. kempi 

 this position is more marked and the avicularia are less variable in size. 



5. Menipea triseriata Busk. 



Menipea triseriata Busk, 18526, p. 22, pi. xxiii, figs. 2-4; Hasenbank, 1932, p. 367, text-fig. 

 xxxii A-F (references). 



Cellnlaria triseriata O'Donoghue, 1924, p. 31 ; O'Donoghue and de Watteville, 1937, p. 13. 

 Station distribution. South Africa: Saldanha Bay. 

 Geographical distribution. South Africa (Auctt. ; Discovery). 



6. Menipea quadrata (Busk). 



Cellularia quadrata Busk, 1884, p. 18, pi. v, figs. 5-56. 



Menipea quadrata Harmer, 1923, p. 342. 

 Station distribution. Not represented in the Discovery collections. 

 Geographical distribution. Kerguelen; Heard Island (Busk). 



7. Menipea zelandica sp.n. Plate V, figs. 3, 5; Figs. 5 B, 8 A. 

 Station distribution. New Zealand: Sts. 933, 935. 

 Geographical distribution. New Zealand (Discovery). 

 Holotype. St. 935. 



Description. Colony dichotomous, bilaminar, slung by rootlets, unjointed, except that 

 some branches are cracked at their base and remain connected by rootlets (Plate V, fig. 3). 



Branches flattened, twelve series of zooecia maximum observed. 



Rootlets originating from marginal zooecia, emerging on frontal surface and running 

 down edges of branches, forming bundles. 



Zooecia with a single marginal spine on one or both sides at some distance from 

 distal end (Fig. 5 B). Opesia oval, cryptocyst wide, steeply descending, granular, 



