THOMSON AND MACKINNON— STOLONIFEEA, ETC. 185 



48. Dendroncphthya japonica, Kukentlial. 

 See Kiikenthal : Zool. Jalirb. xxi. 1905, p. 576, 3 figs. 



Locality. Providence, 78-50 fms. 

 Previously recorded from Japan. 



49. Dendronephthya suensou I (Kolm). 

 See Kiikenthal: loc. cit. p. 586, 1 fig. 



Locality. Providence, 50 fms. and 78-50 fms. ; Seychelles, 39 fms. ; Amirante, 34 fms. 

 Previously recorded from Japan. 



50. Dendronephthya divaricata (Gray). 

 See Kiikenthal : loc. cit. p. 588, 2 figs. 



Locality. Providence, 70-50 fms. ; Mauritius, 100 fms. 

 Previously recorded from New Guinea and Philippines. 



Genus STEREONEPHTHYA. 



To this genus we refer a number of specimens having strong affinities with Dendro- 

 neplithya and Nephthya, but with their polyps arranged " neither in bundles nor in 

 ' lappets,' but separately or in groups, springing directly from the stem and branches." 

 Por such forms Kiikenthal's Stereonephthya is designed as a convenient halfway house 

 between the two more important genera. We are, however, obliged to create two new 

 species, S. kiikeiithali and S. macrospiculata, to include the specimens in the present 

 collection. 



51. Stereonephthya kukenthali, sp. n. (Plate 9. fig. 6; Plate 14. fig. 7.) 



This species is represented by a single small specimen, complete except for a portion 

 of the base. It is a very compact, rigid, bush-like colony, about 2'75 cm. in height by 

 2'5 cm. across the crown. The branches tend to form flattened umbrella-like expan- 

 sions. The lemon-yellow polyps contrast strongly with the whiteness of the stem and 

 branches, on which they occur singly or in groups. There is a tinge of mauve near the 

 base of the colony. The polyp-stalk is from 3-4 mm. in length, with a breadtli of 

 about 1'5 mm. at its origin. The " Stiitzbiindel " is formed of a group of long, stout, 

 white spindles, of which two usually project slightly beyond the polyp. 



The polyp-head is bent sliarply down along its stalk. It is long and narrow, almost 

 cylindrical in shape, and armoured only on its free surfaces ; where it is pressed against 

 the polyp-stalk the spicules are completely absent. There are thus only four rather 

 ill-defined " points " formed of 3-6 steeply sloping pairs of lemon-yellow spicules. 

 These are straight, rather sharply pointed spindles, bearing numerous prominent 

 warts. The following measurements were taken of length and breadth in millimetres : — 

 •765 X '085, -476 X "102, -289 X '034. Small white spindles with few warts occur in the 

 tentacles, -102 X '017 mm. 



The spicules of the trunk and branches are stout, white spindles covered with 

 numerous warts, which are frequently tubercidate. Their dimensions in millimetres 



