154 ECHINODERMA OF THE InDIAN MuSEUM , PART VII. 



CENOMETRA INSUETA. 



Cenometra insnetn 1909. A. H. Clark, Proc. Biol. Soc. Wasliington, vol. 22, 

 p. 146. 



Description. — With the arm and pinnule struetui'e of the following, and the 

 same slenderness of build, this form has the paired dorsal tubercles of the cirri 

 situated with their apices much further apart, about two thirds of the transverse 

 diameter of the dorsal surface of the segments instead of less than one half. 



Locality. — Arrakan Coast, Burma. — One specimen with twenty-eight arms, 

 badly broken. 



CENOMETRA HERDMANI. 



Antedon bella 1904. Chad wick, in Herdman, Report Ceylon Pearl Oyster 



Fisheries, Supplementary Report xi, p. 155. 

 Antedon bella var. brunnea 1904. Chadwick, T. c, p. 155. 

 Cenometra, herdmani 1909. A. H. Clark, Proc. Biol. Soc. Washington, vol. 22, 



p. 145. 



^SS^^' 



b 



Fig. 19. — Cenometra insiieta. 



(a) Lateral view of a cirrus. 

 (6) Dorsal view of a cirrus. 



Description. — This species resembles C. unicornis in general appearance, 

 but is more slender, especially the cirri. It may at once be distinguished from 

 all the other species of the genus by the paired dorsal tubercles on the cirrus 

 segments which are small and situated very close together, and by the shortness 

 and comparative slenderness of P.^, which is very slightly, when at all, longer than 

 Pi ; P.J also has comparatively few segments, these numbering less than twenty. 



The colour in spirits is flesh colour, the cirri and P, dull straw yellow, with a 

 greyish wash on the disk which extends more or less over the division series ; or, 

 deep purple evenly studded with small round black spots, the cirri yellow-brown ; 

 or, flesh colour with purple bands on the arras. 



Localities. — Ganjam Coast, Madras Presidenrtj (Type Locality) : 12 fathoms. 

 — Four specimens. 



Ganjam Coast ; 24-30 fathoms. — One specimen. 



Other Record. — Ceylon. 



Depth.— 7i-ll| (? 36) fathoms. 



