796 C. FORSTER-COOPER. 



10. Antipatlies puiiiila Brook. 



A single colony 25 cm. high, of the " bottle brush " type of gi-o\vth. The specimen agrees 

 with Brook's description in all particulars except that it is of greater size. There seems to 

 be very little difference of any importance between this form and A. ahies. 



Locality. Kolumadulu atoll, 33/.; also from Kurrachee (Brook). 



Genus Aphanipathes Brook. 



Corallum shrub-like with the branches free, or fan-like and reticulate. Spines elongate, 

 equal or longer in the polyp areas. Polyps small and inconspicuous. 



The difference between the two genera Antipatlies and Aphanipathes appears to me to 

 be founded on very slight grounds. The main point distinguishing them lies in the fact 

 that in the latter the spines are longer in the polyp areas and penetrate into the polyps 

 themselves. In view of the fact that in some forms of Antipathes the spines are irregular in 

 size and often very variable in different parts of the corallum, it seems that too much stress 

 must not be laid on this point of difference. 



The other characters used by Brook to define the genus are also equally useless. " Polyps 

 small and inconspicuous," " more or less oval outline," " tentacles usually very short," can all 

 be applied to different species of the suborders Antipathes and Antipathella, the latter of 

 which has already been merged into the former by Schultze. Probably further knowledge 

 of the group at present under consideration will lead to the same fate. 



11. Aphanipathes plantagenista n. sp. PI. LXV. figs. 10, 10 a. 



Colony of the " broom " type of growth. Two equal sized main stems 20 cm. in height 

 giving off branches on one side of the corallum only; these again sending off irregular branches. 



Polyps very small '5 to 1 mm. in diameter, very regularly placed on one side only of the 

 corallum at equal distances of '5 mm. 



Spines stout, sharp and triangular with a general tendency to be larger in the polyp 

 areas and on the polyp side of the corallum. They are arranged in spirals and are not 

 very numerous, about eight going to form one spiral. 



This form is not unlike the description of A. sarothamnoides (Brook) but differs essen- 

 tially in having smooth spines. 



Locality. South Nilandu, 36/., and Felidu, 35/ 



EXPLANATION OF PLATE LXV. 



Fig. 1. Cirripatheis diversa, colony x i. a. Magnified to shew spines x 8. 



Fig. 2. Cirripathes anguina, stem x 8. 



Fig. 3. Cimpiathes gardineri, part of corallum with polyps x 4. a. Stem x 8. 



Fig. 4. Stichopathes maldivensis, stem x 8. 



Fig. 5. Antipathes spinosa, stem x 8. 



Fig. 6. Antipathes chota, colony x 4. a. Stem x 8. h. Two polyps x 8. 



Fig. 7. Antipathes regularis, stem with polyps x 8. a. Stem x 8. 



Fig. 8. Antipathes rubra, two polyps near end of a branch x 8. a — d. Stems x 8. 



Fig. 9. Antipathes nilanduensis, colony x 4. a. Two polyps x 8. h. Stem x 8. 



Fig. 10. Aphanipathes plantagenista, colony x |-. a. Stem x 8. 



