276 Transactions of the Society. 



them. The large ones are blunt and rough, and those on the outer 

 side of the spiral are much longer than those on the inner. The 

 small or secondary spines are short, sharp, and triangular. Cooper 

 has described (1909) a new species, Stichopathes alcocki, but his de- 

 scription of it corresponds with Brook's description of Cirripathes 

 diversa, e.g. in the arrangement and form of the spines. Brook 

 could not decide whether his specimen belonged to Cirripathes or 

 Stichopathes, as it was quite devoid of polyps. Cooper remarks on 

 the large size of the central canal. It is probable that S. alcocki 

 Cooper should be united with S. diversa (Brook). The canal is well 

 seen in this specimen, the wall of the corallum being comparatively 

 thin. 



Locality. — -Portuguese East Africa. Previously recorded from 

 Galle, Ceylon. 



Stichopathes bispinosa nom. n. Plate V. figs. 5, 10. 



= Cirripathes (?) flagellum Brook non = Stichopathes flageUurn Eoule. 

 See Brook, Beport on the Antipatharia of the ' Challenger ' Expedition, 



p. 87, pi. xii fig. 13. 



The longer of the two specimens is 130 cm. in length, and is 

 twisted into large spirals with a diameter of 21 cm. The axis is 

 stout and sinuous, and tapers gradually. The diameter at the base 

 is 7 mm. It is covered with thin ccenenchyma, through which the 

 spines project. The polyps are confined to one side of the stem, 

 and are quite different from those of other species. They are fiat, 

 with a small mouth overlapped by two of the tentacles. A little 

 to the side are two other tentacles, and pushed down the side of 

 the axis is a third pair. At first sight one would believe the polyps 

 to have eight tentacles. So closely are the mouths situated, that it 

 is difficult to discover to which polyp the tentacles belong. The 

 tentacles are short and thick. The spines are arranged in longi- 

 tudinal rows, nine of which can be seen from one aspect. They 

 are very large (about * 5 mm.), and they gradually decrease until 

 exactly opposite the longest spines are the shortest (about ■ 1 mm.). 

 There are secondary spines scattered between the rows. The spines 

 are distinctly papillose at the tip. Members of a row are about a 

 length apart. The central canal is very large, having a diameter of 

 1 * 5 mm. The arrangement of the spines and the general characters 

 of the specimen correspond exactly with Brook's description of 

 Cirripathes (?) flagellvm. As Brook s specimen had no polyps, he 

 could not decide whether it should be referred to Stichopathes or 

 to Cirripathes. 



Locality. — Portuguese East Africa. Previously recorded from 

 Ceylon. 



