ANTIPATHARIA. 793 



ANTIPATHIDAE. 



Subfamily Dekamerota Schultze. 

 Polyps in which ten mesenteries arise in the upper coelenteric space. 



Order Indivlsae Brook. 

 Colony free, in the form of a single unbranched stem. 



Genus Cirripathes Blainv. em Brook. 



An elongate unbranched corallum around which the poly[3S are distributed subspirally in 

 several irregular rows, never in a single linear series. 



1. Cirripathes diversa Brook. PI. LXV. figs. 1, \ a. 



A small colony attached to a piece of nullipore, about 25 cm. long, subequally curled. 

 Diameter of corallum 3 mm. at the base, tapering only very slightly to the top. 



The spines are of two kinds, the primary stout, long and blunt at the end, slightly 

 roughened and arranged in longitudinal rows, from eight to twelve rows being seen in the 

 total circumference. The secondary spines are small and triangular, disposed quite irregularly 

 among the larger ones. 



Locality. Miladumadulu atoll, 24 y. Also recorded from Galle, Ceylon (Brook). Wasin 

 island, E. Afi-ica (coll. Crossland). 



2. Cirripathes anguina (Dana). PI. LXV. fig. 2. 



A long sinuous unbranched stem, 40 cm. long (incomplete at basal end), greatest diameter 

 7 mm. tapering to the point. Corallum jet black. 



Polyps dark rose pink, thus differing in colour from Dana's species in which they were 

 green. There are six rather long tentacles. The size of the polyps varies from 2 mm. in oral 

 diameter in the larger specimens down to small young ones 1 mm. across. The distribution 

 of the polyps on the corallum is also irregular being generally one sixth of an inch apart ; 

 towards the top, however, they are more crowded together. 



The spines are conical and equal in size, fairly stout and with a tendency to be arranged 

 in spirals. They are, however, somewhat irregular in the lower part of the corallum. There 

 are no secondary spines. 



Locality. S. Nilandu, 30/'. Also from the Red Sea, Seychelles, and Ceylon. 



3. Cirripathes gardineri n. sp. PL LXV. figs. 3, 3 a. 



An incomplete stem 30 cm. long, .sinuous with rough annular joints at rare intervals. 

 Greatest diameter 3 mm. Corallum jet black. 



Polj'ps straw yellow (in spirit). The latter are large, averaging 3 mm. high and 2 mm. 

 in oral diameter. There is, however, variation in this respect, some being larger and some 

 (younger intercalated polyps) being much smaller. Their distribution is all round the corallum 

 but quite irregular as to position. The anatomy was found to be quite normal. There are 

 six equally inserted tentacles, the two lateral ones being a little the longer. 



