OELLULAKINE AND OTHER POLyZOA. 357 
Prodr. Zool. Vict., Dec. vi. p. 32) and others, I think it may conveniently be 
retained for the following group of southern species. As pointed out by 
Buskj Emma is nearly related to IriceUaria. 
A. Internodes biserial at the proximal end. Joints composed of two 
ehitinous tubes (fig. 14). 
1. Emma crystallina, Gray. 
Emma crystallina, Gray, 1843, p. 293. New Zealand. 
„ „ Busk, 1852^ pp. 28, 33, pi. 40. figs. 1-3. New Zealaiid,Bass Straits. 
Menipea erystallina, MacGillivray, 1881, Prodr. Zool. Vict., Dec. vi. p. 31, pi. 58. 
figs. 2-2 b. 
„ „ Waters, 1887, A. M. N. H. (5) .xx. pp. 88, 265. New South 
Wales, etc. 
„ „ Levinsen, 1909, pp. 132, 133, pi 2. figs, la, 16. 
2. Emma tricbllata, Busk. 
Emma tricellata, Busk, 1852=, pp. 28, 33, pi. 41. figs. 1, 2. Bass Straits, New Zealand. 
Menipea tricellata, MacGillivray, 1881, t. cit. p. 34, pi. 58. flgs. 5-5 b. 
3. Emma buskii (Wyv. Thorns.) (fig. 14). 
Menijiea buskii, Wyville Thomsou, 1858, Nat. Hist. Rev. v. Proc. of Societies, p. 144, 
pi, 12. fig. 1. Tasmania, New Zealand. 
„ „ MacGillivray, 1881, t. cit. pp. 36, 32, pi. 58. figs. 6-6 b. 
„ buski, Levinsen, 1909, pp. 59, 131-133, pi. 2. figs. 3«-3c. 
4. Emma cbrvicoeni&, MacGill. 
Emma cervicornis, MacGillivray, 1869, Trans. Proc. li. Soc. Vict. ix. p. 127. 
Victoria. 
Menipea cervicornis, MacGillivray, 1881, t. cit. pp. 34, 32, pi. 58. figs. 4-46, 
„ „ var.. Waters, 1887, A. M. N. II. (5) xx. p."88, pi 4. fig. 1. ' 
New South Wales. 
„ „ Levinsen, 1909, pp. 59, 132, 133, pi. 2. figs. 4a, 4J. 
B. Internodes uniserial at the proximal end. Joints composed of a single 
ehitinous tube (fig. 13). 
5. Emma cyathus ( Wyv. Thorns.) (fig. 13). 
Menipea cyathus, Wyville Thomson, 1858, t, cit. p. l43, pi. 15. figs. 10, 10a. Bass 
Straits; Port Fairy (Victoria). 
„ „ MacGillivray, 1881, ?;. ciY. pp. 33, 32, pi 58. figs. 3-36. 
„ „ Levinsto, 1909, pp. 132, 1.33, pi. 2. figs. 2a, 2b. 
6. ScRUPOCELLARiA, Van Beneden. 
Zoarium jointed, biserial, bifurcation of type 8 (fig. 8), the joints crossino- 
the zooecia GG and DF ; frequently traversing the opesia of the outer 
zooecia, C and D, but never those of F and Gr. Proximal segments of F and 
G in contact on the basal side of E, shoi-ter than the corresponding parts of 
LINN. JOURN. ZOOLOGY, VOL. XXXV. 26 
