156 Rev. T. Hincks's Contributions towards 



its true natural affinities (and this is the important point) by 

 ranking it in the family of the Microporidfe. 



Vincularia ornata^ Busk, and F. neozelanica, Busk, are 

 true Membraniporidffi. 



I have engraved the figure of V. ahyssicola^ as it shows a 

 finer development of the remarkable vibracula than Smitt's. 

 These appendages exhibit a very interesting structure, being 

 edged for a considerable portion of their length along both 

 sides by a rather broad membranous expansion. 



Loc. Ofi" Cojiraa, Cuba, 450 fathoms, on Betepora ; Florida, 

 68 fathoms, on Xullipora (Pourtales) ; on coral from Singa- 

 pore or the Philippines {Miss Jelly). 



V. FOREIGX CHEILOSTOMATA. (Miscellaneous.) 



Family Epicaulidiidse. 



Epicaulidium, n. gen. 



Gen. char. — Zoarium calcareous, composed of a creeping 

 base and erect stems, made up of internodes linked together at 

 their extremities by corneous joints, on which the zooecia are 

 borne in companies. Zooecia erect, clavate, with a small, 

 oblique, subterminal orifice, several united together longitu- 

 dinally, so as to form a cluster ; the clusters opposite, free, 

 except at the base, where they are attached by corneous joints 

 to the internodes. 



Epicaulidium pulchrum, n. sp. 

 (PI. X. fig. 5.) 



Stem composed of jointed internodes of about equal length, 

 which are white, expanding gradually from the base upwards 

 to a point a short distance below the top, where there is a 

 slight protuberance on each side, surmounted by a circular 

 orifice, from which the corneous joint supporting the cluster 

 of cells originates ; above the projections the internode nar- 

 rows and continues cylindrical to the top ; a number of small 

 tubules immersed in the cells, which show as disks on the 

 surface and give it a speckled appearance ; no branching. 

 Zocecia in triplets, united through their whole length, the 

 central one compressed, narrow, pointed below, slightly wider 

 above, orifice oval, oblique, with a thin slightly raised margin, 

 facing towards the base of the stem (downwards) ; two lateral 

 cells subclavate, expanded above, narrowed and pointed at the 

 base, orifice as in central cell, except that there is a small 

 spine in the centre of the upper margin ; surface smooth and 

 shining ; the lateral cells attached by the dorsal surface to 

 the sides of the central, orifice facing sideways, with a slight 



