14 Mr. J. J. Quelch on some 



DisticJiojJora granulosa, n. sp. (PL I. fig. 1.) 



Coenosteum branched, regularly flabelliform, somewhat 

 incrusting at base, of a rich scarlet-red colour on the distal 

 portion of the main branches and throughout the branchlets 

 even to the tips, except where fracture has taken place at the 

 extremities, the small commencing growth at such points 

 being very pale reddish ; on the basal part of the main 

 branches and on the incrusting portion the colour becomes of 

 a pink-red. Branches short and thick for the size of colony, 

 being about 7-12 millim, thick at the base of branches that 

 are about 30 millim. in length, and diminishing gradually in 

 size to about 2 millim. diameter at the tips, compressed at the 

 base, round above ; branchlets short, round, obtuse, rather 

 thickened at the base and about 2 millim. thick at the apex, 

 which is often slightly expanded where division is taking 

 place. Coenenchyma dense, the surface conspicuously 

 roughened and granulated either by crowded bluntly conical 

 eminences, between which are placed small scattered pores, or 

 by sinuous irregularly confluent or reticulated ridges, which 

 are more usually found towards the distal parts of the 

 coenosteum. 



Cyclosystems regularly arranged on opposite sides in 

 distinct, deep, continuous lateral furrows, the width between 

 the outer edges of the dactylopores being about '15 millim. 

 Gastropores rather small, circular or slightly elongated trans- 

 versely, slightly unequal and unequally separated, the partition 

 between them often equal to their diameter, and not rising 

 above the bottom of the furrow ; style deep, very thin, and 

 obsoletely hirsute ; in section the gastro-canal is seen to be 

 nearly smooth. Dactylopores large in comparison with the 

 gastropores, being about one third to one fifth the size of the 

 larger gastropores, placed on the margin of the furrow, at 

 distances apart generally exceeding their width, elongated 

 transversely, with their outer and lateral margins much 

 elevated above the surrounding surface, so as to present in 

 profile a series of distinct tubular or spout-shaped eminences ; 

 the inner margin is generally wanting, so that the dactylopores 

 open on that side into the gastropore furrow. Arapullas 

 abundant, scattered irregularly or closely grouped, forming 

 rounded eminences about '76 millim. in diameter, marked on 

 the upper surface by the small sinuous irregular ridges which 

 are characteristic of the ccenosteum, between which are several 

 small scattered irregular pored openings, which communicate 

 with a single cavity within; the walls of the ampullae become 

 very thin with age, and finally break away. 



