This species, which is otherwise not different from /•'. distincfoim, is distinguished by 

 the density and weight i>f tin- corallum and by the more than usual cutting away of the septa 

 near the calicular margin. Under the thin film of living tissue which covers the outer surface 

 of the thecal wall in the neighbourhood of the calicular margin a Polychaete is embedded, in 

 the single "Siboga" specimen. 



Distribution. Off South-east coast of Australia ; Arafura Sea. 



Flabellum sp. 



Stat. 38. 7°35 - .4S., ii/°2S'.6E. 521 m. 1 Ex. 

 Stat. 316. 7° 19.4 S., il 6° 49'. 5 E. 538 m. 1 Ex. 



These two specimens, although preserved with the living tissues, are not iclentifiable, 

 owing to irregularity of growth due to uneven repair after damage. Their coralla have the 

 density and weight of F. australe. In other respects they resemble F. paripavoninum mihi, 

 from the depths off the Laccadives. 



4 1 . Flabellum latuw Studer. 



Flabellum latum Studer. Monatsber. d. Kngl. Preussischen Akad. der Wissenschaft, zu Berlin 

 (1877) 1878, p. 630, Taf. I. Fig. 3«— b. 



Stat. 105. 6°8'N., 121 19' E. 275 m. 1 Ex. 

 Distribution. South Pacific, off New Zeeland ; Sulu Sea. 



42. Flabellum laciniatum, Phil. var. messum. 



Flabellum laciniatum var. Alcock. Investigator Deep Sea Madreporaria, p. 23. 



Stat. 45. 7 24' S., n8°i5'.2E. 794 m. 3 Ex. 

 Stat. 284. 8°43'.iS., i27°i6'.7E. 828 m. t Ex. 

 Stat. 314. 7 36' S., H7°3o'.8E. 694 m. 1 Ex. 



This variety resembles a F. laciniatum in everything except that the ten large sej)ta 

 of the first two cycles that occupy the faces of the thecal wall are only moderately exsert, 

 instead of forming deep-cut petaloid lobes. It thus looks like a F. laciniatum of which the 

 petaloid lobes of the calicular margin have been chipped away. As in F. alabastrum Mosely 

 the sides of the corallum are more or less pinched in near the middle. 



43. Flabellum suluense n. sp. Plate IV. Fig. 29, 29^ — b. 



Stat. 100. 6°n'N., 120 37'. s E. 450 m. 1 Ex. dead. 



Corallum compressed, shaped like a nearly full-spread fan, the margin of the calicle 



being a little less than a semicircle, the ends being concave, and the faces flat. Remains of 



a pedicle of attachment are present. The costae are mere strise : the margin of the calicle is 

 rather finely jagged. 



