HICKSON AND ENGLAND—STYLASTERINA. 353 
The smaller dactylopores are rare and scattered. At the ends of the branches they are 
very difficult to find and may not occur. They seem to be certainly less abundant in the 
Providence specimens than in the type. 
The gastropores are situated in pits between the nariform processes and each one 
contains a large, conspicuous, pointed, spinous style which reaches almost to the level of 
the pit. 
In a vertical section through a branch the gastropores and styles can be seen passing 
towards the centre and then down the axis for some distance. We have seen in such 
sections several examples of quite distinct but very thin cup-shaped or flattened tabulee. 
Such tabulw occur quite irregularly, and not at definite or constant distances apart 
(fig. 8). Similar tabule also occur in the dactylopores. 
The genus Spinipora is closely related to the genus Labiopora, Moseley, and these two 
genera are probably also related to the genus Sleganopora (H. & E.). Some new specimens 
of Labiopora from New Zealand have recently been placed in our hands by Professor 
W. B. Benham, F.R.S., and we propose to publish shortly a paper in which these 
relationships will be fully discussed. 
LITERATURE. 
1. Gardiner, J. S.—The Fauna and Geography of the Maldive and Laccadive Archipelagoes, vol. i. 
part 3, p. 324. 
. Hickson, S. J—Notes on a Collection of Hydrocorallin. Proc. Roy. Dubl. Soe. vol. vii. part 5 (1892). 
. Hickson, S. J—The Gonophores of Allopora and Distichopora. Q. J. Micr. Sci. vol. xxxii. (1891). 
. Hickson, S. J., and England, H. M.—Stylasterina, Siboga-Expeditie, Mon. vol. viii. (1905). 
. Moseley, H. N.i—Hydrocoralline. ‘Challenger’ Reports, vol. 1. (1881). - 
. Pallas, P. S.—Hlenchus Zoophytorum, Ld. by P. van Cleef, 1766, p. 258. 
. Pourtalés, L. F.—Bull. Mus. Harvard, 1879, vol. v. p. 210. 
. Pourtalés, L. F.—Deep-sea Corals, 1871, p. 38. 
cosNt ON FW NN 
EXPLANATION OF PLATE 44. 
Fig. 1. Sporadopora providentia, sp. u., nat. size. To show sporadic occurrence of pores (p.) on the 
flat surfaces. : 
Fig. 2. Sporadopora providentie. The edge of a branch enlarged to show the arrangement of the 
gastropores (gast.p.) and dactylopores (dact.p.) in regular rows. 
Fig. 3. The same species showing another portion of the edge with a more irregular arrangement of the 
pores. 
Fig. 4. Distichopora profunda, sp. u., nat. size. Showing at g.p. the irregular rows of pores on 
the surfaces, and at amp. the ampulle. 
Fig. 5. The same species. The edge enlarged, to show the arrangement of the gastropores (gast.p.) in 
double rows and the dactylopores (dact.p.). 
Fig. 6. The same, further enlarged, to show the horseshoe-shaped lips of the dactylopores (daci.p.). 
SECOND SERIES.—ZOOLOGY, VOL. XII. 48 
