158 ECHINODERMA OP THE INDIAN MtTSEUM, PART VII. 



Fourteen to eighteen arms 55 mm. long. 



Pa absent; P, small and very slender, 3 mm. long, with about twelve seg- 

 ments; P.^ the largest and the longest on the arm, 11 mm. long with seventeen 

 segments, the first not so long as broad, the third twice as long as broad, the 

 remainder about three times as long as broad ; the pinnule is much more slender 

 than the corresponding pinnule in the other species of the genus, and is nearly 

 smooth, the distal edges of the segments in the terminal portion projecting only 

 very slightly ; P^ 7 mm. long, similar to P.^ but very slender, the segments dis- 

 tally proportionately somewhat longer ; following pinnules more slender still , 

 about 5 mm. long with fifteen segments, and flexible, gradually decreasing in 

 length to 4 mm. and increasing again to S mm. distally. 



The colour in spirits is flesh colour, with a few narrow bands dorsally and 

 large blotches ventrally of purple. 



Localities. — Straits of Ormuz, at the entrance to the Persian Gulf (26° 22' N. 

 lat. , 56° 10' 00" E. long.); 48-49 fathoms; mud (Type Locality). — One speci- 

 men with fourteen arms. 



? Kurrachi. — Two specimens, one with sixteen, the other with eighteen 

 arms. 



CYLLOMETRA ALBOPURPUREA. 



Cyllometra albopiirpurea 1908. A. H. Clark, Proc. U. S. Nat. Mus., vol. 34, 

 p. 2.39. 



Habitat. — Liu Kiu Islands and southern Japan. 

 Depth. — 8-100 fathoms. 



CYLLOMETRA DISCIFORMIS. 



Antedon disciformis 1888. P. H. Carpenter, " Challenger " Reports, vol. 26, 

 Zoology, p. 228, pi. iv, figs. 2 a-d ; pi. xxxix, fig. 4. 

 Habitat. — Philippine Islands. 

 Depth.— Littoral, and down to 58 fathoms. 



CYLLOMETRA ANOMALA. 

 Cyllometra anomala 1908. A. H. Clark, Proc. Biol. Soc. Washington, vol. 21, 

 p. 225. 



Habitat. — Southern Japan. 



CYLLOMETRA CLAR/E. 



Antexlon clara> 1890. Hartlaub, Nachr. Ges. Gottingen, Mai 1890, p. 174. — 

 1891. Nova Acta Acad. German., vol. 58, No. 1, p. 41, pi. 2, fig. 19. 



Habitat. — Amboina. 



Genus DECAMETRA. 



Decameira 1911. A. H. Clakk, Proc. U. S. Nat. Mus., vol. 40, p. 31 (Antedon 

 informis P. H. Carpenter, 1888). 



