78 ECHINODERMA OF THE INDIAN MuSEUM, PART VII. 



Habitat. — Philippine Islands. 

 Depth. — 38 fathoms. 



COMISSIA IGNOTA. 

 Comissia ignota 1910. A. H. Clark, Proc. U. S. Nat. Mus., vol. 40, p. 17. 

 Habitat. — Amirante Islands (north-east of Madagascar). 

 Depth.— Littoral, and down to 17 fathoms. 



COMISSIA PECTINIFER, sp. nov. 



Description. — Centrodorsal moderately large, with a moderately large Hat 

 dorsal pole and three closely crowded marginal rows of cirrus sockets. 



Cirri XXXIV, 14- Ki (usually 16), 14 mm. long; the eighth is a transition seg- 

 ment; the longer jiroximal segments are nearly or quite twice as long as broad, 

 slightly constricted centrally; the two segments preceding the penultimate are 

 squarish to one-third broader than long ; the outer segments (beyond the transi- 

 tion segment) are very highly polished, and bear small dorsal tubercles. 



The ten arms are about 9U mm. long; the elements of the IBr series appear 

 in external view to be united by syzygy , and are well separated laterally ; the 

 arms resemble those of Comissia liitkeni; the brachials overlap rather strongly. 

 Tlie distal intersyzygial interval is usually three oblique muscular articulations. 



P, to P^ provided with combs; P, is about 12 mm. long, and has a comb 

 with about twenty-five exceptionally long teeth ; the comb of P^ has fifteen or 

 sixteen teeth, beyond which extends a toothless tip; only nine segments of P^ 

 are not supplied with teeth. 



Habitat. — Christmas Island; the type is in the British Museum. 



COMISSIA, sp. 



Actinometra parvicirra 1904. Chadwick, in Hebdman, Report Ceylon Pearl 

 Oyster Fisheries, part 2, Supplementary Report xi, p. 158 (part), plate, figs. 

 13, 14. 



Mr. Chadwick has recorded, as a ten-armed specimen of Comanthus parvi- 

 cirra, a specimen of an apparently new species of Comissia which was taken on 

 the south coast of Ceylon in about 100 fathoms. 



Subfamily COMACTINIINM. 

 Comacfiniincc 1909. A. H. Clark, Proc. Biol. Soc. Washington, vol. 22, p. 175. 



Genus COMATULA. 



ConKiliila 1.S16. Lamarck, Hist. nat. des animaux sans vertebras, vol. 2, p. 530 

 (Comatula Solaris, sp. nov.). 



